Skip to main content

World Checklist of Selected Plant Families (WCSP)

1149  records retrieved

Click on any name to see a detailed overview.

Names in bold indicate accepted names, plain list indicates non accepted names.

Haworthia Duval, Pl. Succ. Horto Alencon.: 7 (1809), nom. cons.

Haworthia acuminata (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia adelaidensis (Poelln.) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia aegrota Poelln., Desert Pl. Life 11: 194 (1939).

Haworthia affinis Baker, J. Linn. Soc., Bot. 18: 213 (1880).

Haworthia agavoides Zantner & Poelln., Repert. Spec. Nov. Regni Veg. 43: 232 (1938).

Haworthia agnis Battista, Alsterworthia Int. 2(2): 9 (2002).

Haworthia akaonii M.Hayashi, Haworthia Study 16: 13 (2006).

Haworthia albanensis Schönland, Rec. Albany Mus. 2: 256 (1912).

Haworthia albicans (Haw.) Haw., Syn. Pl. Succ.: 91 (1812).

Haworthia albicans var. virescens (Haw.) Baker in W.H.Harvey & auct. suc. (eds.), Fl. Cap. 6: 343 (1896).

Haworthia albispina M.Hayashi, Haworthia Study 8: 1 (2002).

Haworthia altilinea Haw., Philos. Mag. J. 66: 301 (1824).

Haworthia altilinea f. acuminata Poelln., Repert. Spec. Nov. Regni Veg. 45: 168 (1938).

Haworthia altilinea var. bicarinata Triebner, Repert. Spec. Nov. Regni Veg. 45: 70 (1938).

Haworthia altilinea var. brevisetata Poelln., Repert. Spec. Nov. Regni Veg. 41: 193 (1937).

Haworthia altilinea f. inconfluens Poelln., Repert. Spec. Nov. Regni Veg. 45: 169 (1938).

Haworthia altilinea var. inermis (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 41: 194 (1937).

Haworthia altilinea f. inermis (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 45: 168 (1938).

Haworthia altilinea var. limpida (Haw.) Poelln., Cact. J. (Croydon) 6: 18 (1937).

Haworthia altilinea f. minor Triebner, Repert. Spec. Nov. Regni Veg. 45: 170 (1938).

Haworthia altilinea var. morrisiae Poelln., Repert. Spec. Nov. Regni Veg. 45: 168 (1938).

Haworthia altilinea var. mucronata (Haw.) Poelln., Cact. J. (Croydon) 6: 18 (1937), nom. superfl.

Haworthia altilinea var. polyphylla (Baker) Poelln., Repert. Spec. Nov. Regni Veg. 45: 169 (1938).

Haworthia altilinea var. setulifera Triebner, Repert. Spec. Nov. Regni Veg. 45: 170 (1938).

Haworthia altilinea f. subglauca Poelln., Repert. Spec. Nov. Regni Veg. 45: 168 (1938).

Haworthia altissima (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia amethysta M.Hayashi, Haworthia Study 10: 1 (2003).

Haworthia angiras M.Hayashi, Haworthia Study 14: 13 (2005), herbarium where type conserved not specified.

Haworthia angolensis Baker, Trans. Linn. Soc. London, Bot. 1: 263 (1878).

Haworthia angustata (Poelln.) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia angustifolia Haw., Philos. Mag. J. 67: 283 (1825).

Haworthia angustifolia var. albanensis (Schönland) Poelln., Cact. J. (Croydon) 5: 35 (1936).

Haworthia angustifolia var. altissima M.B.Bayer, Haworthia Revisited: 26 (1999).

Haworthia angustifolia var. angustifolia.

Haworthia angustifolia f. baylissii (C.L.Scott) M.B.Bayer, New Haworthia Handb.: 26 (1982).

Haworthia angustifolia var. baylissii (C.L.Scott) M.B.Bayer, Haworthia Revisited: 27 (1999).

Haworthia angustifolia var. denticulifera Poelln., Repert. Spec. Nov. Regni Veg. 41: 194 (1937).

Haworthia angustifolia var. grandis G.G.Sm., J. S. African Bot. 9: 105 (1943).

Haworthia angustifolia f. grandis (G.G.Sm.) Pilbeam, Haworthia & Astroloba: 36 (1983).

Haworthia angustifolia var. liliputana Uitewaal, Succulenta (Netherlands) 32: 43 (1953).

Haworthia angustifolia var. paucifolia G.G.Sm., J. S. African Bot. 14: 48 (1948).

Haworthia angustifolia f. paucifolia (G.G.Sm.) Pilbeam, Haworthia & Astroloba: 36 (1983).

Haworthia ao-onii M.Hayashi, Haworthia Study 16: 13 (2006).

Haworthia aquamarina M.Hayashi, Haworthia Study 10: 13 (2003).

Haworthia arabesqua M.Hayashi, Haworthia Study 12: 7 (2004).

Haworthia arachnoidea (L.) Duval, Pl. Succ. Horto Alencon.: 7 (1809).

Haworthia arachnoidea var. angiras (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016), not validly publ.

Haworthia arachnoidea var. arachnoidea.

Haworthia arachnoidea var. aranea (A.Berger) M.B.Bayer, Haworthia Revisited: 30 (1999).

Haworthia arachnoidea var. bolusii (Baker) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 43 (1997).

Haworthia arachnoidea var. calitzdorpensis (Breuer) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia arachnoidea var. gigas (Poelln.) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia arachnoidea var. gracilis (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 44 (1997).

Haworthia arachnoidea var. joubertii (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016), not validly publ.

Haworthia arachnoidea var. laxa (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016), not validly publ.

Haworthia arachnoidea var. limbata (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016), not validly publ.

Haworthia arachnoidea var. marumiana (Uitewaal) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 44 (1997).

Haworthia arachnoidea var. minor Haw., Suppl. Pl. Succ.: 52 (1819).

Haworthia arachnoidea var. namaquensis M.B.Bayer, Haworthia Revisited: 31 (1999).

Haworthia arachnoidea var. nigricans (Haw.) M.B.Bayer, Haworthia Revisited: 32 (1999).

Haworthia arachnoidea subsp. pearsonii (C.H.Wright) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 43 (1997).

Haworthia arachnoidea var. pearsonii (C.H.Wright) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 44 (1997).

Haworthia arachnoidea var. pehlemanniae (C.L.Scott) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 44 (1997).

Haworthia arachnoidea var. scabrispina M.B.Bayer, Haworthia Revisited: 34 (1999).

Haworthia arachnoidea var. semiviva (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 43 (1997).

Haworthia arachnoidea subsp. setata (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 43 (1997).

Haworthia arachnoidea var. setata (Haw.) M.B.Bayer, Haworthia Revisited: 34 (1999).

Haworthia arachnoidea subsp. tenera (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 44 (1997).

Haworthia arachnoidea var. tenera (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 44 (1997).

Haworthia arachnoidea var. translucens (Willd.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 43 (1997).

Haworthia arachnoidea var. xiphiophylla (Baker) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 43 (1997).

Haworthia aranea (A.Berger) M.B.Bayer, Haworthia Handb.: 98 (1976).

Haworthia aranea var. candida (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia arcana (Gideon F.Sm. & N.R.Crouch) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia archeri W.F.Barker ex M.B.Bayer, J. S. African Bot. 47: 791 (1981).

Haworthia archeri var. dimorpha M.B.Bayer, J. S. African Bot. 47: 793 (1981).

Haworthia argyrostigma Baker in W.H.Harvey & auct. suc. (eds.), Fl. Cap. 6: 341 (1896).

Haworthia aristata Haw., Suppl. Pl. Succ.: 51 (1819).

Haworthia aristata var. helmiae (Poelln.) Pilbeam, Haworthia & Astroloba: 39 (1983).

Haworthia aristata subsp. helmiae (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 48 (1997).

Haworthia armstrongii Poelln., Kakteenkunde 1937: 152 (1937).

Haworthia asema (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia aspera (Haw.) Haw., Syn. Pl. Succ.: 90 (1812).

Haworthia aspera var. major (Haw.) Parr, Bull. African Succ. Pl. Soc. 6: 195 (1971).

Haworthia asperiuscula Haw., Suppl. Pl. Succ.: 60 (1819).

Haworthia asperiuscula var. patagiata G.G.Sm., J. S. African Bot. 12: 11 (1946).

Haworthia asperiuscula var. subintegra G.G.Sm., J. S. African Bot. 11: 68 (1945).

Haworthia asperula Haw., Philos. Mag. J. 66: 300 (1824).

Haworthia atrofusca G.G.Sm., J. S. African Bot. 14: 41 (1948).

Haworthia atrofusca var. enigma (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia atrovirens (DC.) Haw., Saxifrag. Enum. 2: 57 (1821).

Haworthia attenuata (Haw.) Haw., Syn. Pl. Succ.: 92 (1812).

Haworthia attenuata var. argyrostigma (Baker) A.Berger in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 94 (1908).

Haworthia attenuata var. britteniana (Poelln.) Poelln., Kakteen And. Sukk. 10: 166 (1937).

Haworthia attenuata f. britteniana (Poelln.) M.B.Bayer, New Haworthia Handb.: 63 (1982).

Haworthia attenuata var. caespitosa (A.Berger) R.S.Farden, Cact. J. (Croydon) 8: 34 (1939).

Haworthia attenuata f. caespitosa (A.Berger) Pilbeam, Haworthia & Astroloba: 43 (1983).

Haworthia attenuata var. clariperla (Haw.) Baker, J. Linn. Soc., Bot. 18: 203 (1880).

Haworthia attenuata f. clariperla (Haw.) M.B.Bayer, Haworthia Handb.: 107 (1976).

Haworthia attenuata var. deltoidea R.S.Farden, Cact. J. (Croydon) 8: 36 (1939).

Haworthia attenuata var. glabrata (Salm-Dyck) M.B.Bayer, Haworthia Update 7(4): 37 (2012).

Haworthia attenuata var. inusitata R.S.Farden, Cact. J. (Croydon) 8: 38 (1939), not validly publ.

Haworthia attenuata var. linearis R.S.Farden, Cact. J. (Croydon) 8: 36 (1939).

Haworthia attenuata var. minissima R.S.Farden, Cact. J. (Croydon) 8: 37 (1939).

Haworthia attenuata var. odonoghueana R.S.Farden, Cact. J. (Croydon) 8: 34 (1939).

Haworthia attenuata var. radula (Jacq.) M.B.Bayer, Haworthia Revisited: 167 (1999).

Haworthia attenuata var. uitewaaliana R.S.Farden, Cact. J. (Croydon) 8: 36 (1939), not validly publ.

Haworthia azurea M.Hayashi, Haworthia Study 9: 12 (2003).

Haworthia baccata G.G.Sm., J. S. African Bot. 10: 20 (1944).

Haworthia badia Poelln., Kakteenkunde 1938: 76 (1938).

Haworthia badia var. bobii (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia badia var. joleneae (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia batesiana Uitewaal, Natl. Cact. Succ. J. 3: 101 (1948).

Haworthia batesiana var. lepida (G.G.Sm.) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia batesiana var. reddii (C.L.Scott) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia bathylis M.Hayashi, Haworthia Study 15: 116 (2006).

Haworthia batteniae C.L.Scott, Cact. Succ. J. (Los Angeles) 51: 268 (1979).

Haworthia bayeri J.D.Venter & S.A.Hammer, Cact. Succ. J. (Los Angeles) 69: 75 (1997).

Haworthia bayeri var. hayashii (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia bayeri var. jadea (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia baylissii C.L.Scott, J. S. African Bot. 34: 1 (1968).

Haworthia beanii G.G.Sm., J. S. African Bot. 10: 137 (1944).

Haworthia beanii var. minor G.G.Sm., J. S. African Bot. 10: 138 (1944).

Haworthia bella M.Hayashi, Haworthia Study 12: 8 (2004).

Haworthia beukmanii (Poelln.) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia × bicarinata (Haw.) Parr, Bull. African Succ. Pl. Soc. 6: 195 (1971).

Haworthia bijliana Poelln., Repert. Spec. Nov. Regni Veg. 27: 134 (1929).

Haworthia bijliana var. joubertii Poelln., Cact. J. (Croydon) 5: 36 (1936).

Haworthia bilineata Baker, J. Linn. Soc., Bot. 18: 213 (1880).

Haworthia bilineata var. affinis (Baker) Poelln., Repert. Spec. Nov. Regni Veg. 44: 235 (1938).

Haworthia bilineata var. gracilidelineata (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 44: 236 (1938).

Haworthia blackbeardiana Poelln., Repert. Spec. Nov. Regni Veg. 31: 82 (1932).

Haworthia blackbeardiana var. calaensis (Breuer) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia blackbeardiana var. major Poelln., Cact. J. (Croydon) 5: 35 (1937).

Haworthia blackbeardiana var. specksii (Breuer) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia blackburniae W.F.Barker, J. S. African Bot. 3: 93 (1937).

Haworthia blackburniae Poelln., Kakteenkunde 1937: 132 (1937), nom. illeg.

Haworthia blackburniae var. blackburniae.

Haworthia blackburniae var. derustensis M.B.Bayer, Haworthia Revisited: 41 (1999).

Haworthia blackburniae subsp. graminifolia (G.G.Sm.) Halda, Acta Mus. Richnov., Sect. Nat. 4: 34 (1997).

Haworthia blackburniae var. graminifolia (G.G.Sm.) M.B.Bayer, Haworthia Revisited: 42 (1999).

Haworthia bobii M.Hayashi, Haworthia Study 29: 4 (2014).

Haworthia bolusii Baker, J. Linn. Soc., Bot. 18: 215 (1880).

Haworthia bolusii var. aranea A.Berger in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 114 (1908).

Haworthia bolusii var. blackbeardiana (Poelln.) M.B.Bayer, New Haworthia Handb.: 31 (1982).

Haworthia bolusii var. bolusii.

Haworthia bolusii var. floccosa (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia bolusii var. pringlei (C.L.Scott) M.B.Bayer, Haworthiad 16: 62 (2002).

Haworthia bolusii var. semiviva Poelln., Repert. Spec. Nov. Regni Veg. 44: 135 (1938).

Haworthia borealis M.Hayashi, Haworthia Study 15: 14 (2006).

Haworthia breueri M.Hayashi, Haworthia Study 7: 14 (2002).

Haworthia brevicula (G.G.Sm.) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia brevis Haw., Suppl. Pl. Succ.: 57 (1819).

Haworthia britteniana Poelln., Repert. Spec. Nov. Regni Veg. 41: 196 (1937).

Haworthia bronkhorstii M.Hayashi, Haworthiad 15: 16 (2001).

Haworthia × broteroana Resende, Bol. Soc. Brot., sér. 2, 15: 159 (1941).

Haworthia browniana Poelln., Desert Pl. Life 9: 102 (1937).

Haworthia bruynsii M.B.Bayer, J. S. African Bot. 47: 789 (1981).

Haworthia bullulata (Jacq.) Parr, Bull. African Succ. Pl. Soc. 6: 195 (1971).

Haworthia caerulea M.Hayashi & Breuer, Haworthia Study 12: 7 (2004).

Haworthia caerulea var. pallens (Breuer & M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia caesia M.Hayashi, Haworthia Study 10: 14 (2003).

Haworthia caespitosa Poelln., Repert. Spec. Nov. Regni Veg. 41: 197 (1937).

Haworthia caespitosa var. consanguinea (M.B.Bayer) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia caespitosa f. subplana Poelln., Repert. Spec. Nov. Regni Veg. 44: 232 (1938).

Haworthia caespitosa f. subproliferans Poelln., Repert. Spec. Nov. Regni Veg. 44: 232 (1938).

Haworthia calaensis Breuer, Alsterworthia Int., Spec. Issue 7: 5 (2004).

Haworthia calcarea (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia calitzdorpensis (Breuer) M.Hayashi, Haworthia Study 22: 11 (2010).

Haworthia calva M.Hayashi, Haworthia Study 12: 8 (2004).

Haworthia candida M.Hayashi, Haworthia Study 16: 16 (2006).

Haworthia cangoensis M.Hayashi, Haworthia Study 14: 13 (2005), herbarium where type conserved not specified.

Haworthia cangoensis var. kogmanensis (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016), not validly publ.

Haworthia cangoensis var. royalis (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016), not validly publ.

Haworthia cangoensis var. tradouwensis (Breuer) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia capillaris M.Hayashi, Haworthia Study 16: 16 (2006).

Haworthia carrissoi Resende, Bol. Soc. Brot., sér. 2, 15: 161 (1941).

Haworthia × cassytha Baker in W.H.Harvey & auct. suc. (eds.), Fl. Cap. 6: 337 (1896).

Haworthia chalwinii Marloth & A.Berger, Notizbl. Königl. Bot. Gart. Berlin 4: 247 (1906).

Haworthia chloracantha Haw., Saxifrag. Enum. 2: 57 (1821).

Haworthia chloracantha var. angustifolia (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 42 (1997).

Haworthia chloracantha subsp. angustifolia (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 42 (1997).

Haworthia chloracantha subsp. baylissii (C.L.Scott) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 41 (1997).

Haworthia chloracantha var. chloracantha.

Haworthia chloracantha var. denticulifera (Poelln.) M.B.Bayer, Haworthia Handb.: 112 (1976).

Haworthia chloracantha var. floribunda (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 42 (1997).

Haworthia chloracantha var. mclarenii (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 42 (1997).

Haworthia chloracantha var. monticola (Fourc.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 42 (1997).

Haworthia chloracantha var. pulchella (M.B.Bayer) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 42 (1997).

Haworthia chloracantha var. serrata (M.B.Bayer) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 42 (1997).

Haworthia chloracantha var. subglauca Poelln., Kakteenkunde 9: 135 (1937).

Haworthia chloracantha var. variegata (L.Bolus) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 42 (1997).

Haworthia chloracantha subsp. variegata (L.Bolus) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 42 (1997).

Haworthia chloracantha var. zantneriana (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 42 (1997).

Haworthia ciliata M.Hayashi, Haworthia Study 14: 11 (2005), herbarium where type conserved not specified.

Haworthia clariperla Haw., Philos. Mag. Ann. Chem. 2: 186 (1827 publ. 1828).

Haworthia coarctata Haw., Philos. Mag. J. 66: 301 (1824).

Haworthia coarctata subsp. adelaidensis (Poelln.) M.B.Bayer, Natl. Cact. Succ. J. 28: 86 (1973).

Haworthia coarctata var. adelaidensis (Poelln.) M.B.Bayer, Haworthia Revisited: 172 (1999).

Haworthia coarctata f. bellula (G.G.Sm.) Pilbeam, Haworthia & Astroloba: 52 (1983).

Haworthia coarctata f. chalwinii (Marloth & A.Berger) Pilbeam, Haworthia & Astroloba: 52 (1983).

Haworthia coarctata f. conspicua (Poelln.) Pilbeam, Haworthia & Astroloba: 52 (1983).

Haworthia coarctata var. greenii (Baker) M.B.Bayer, Natl. Cact. Succ. J. 28: 86 (1973).

Haworthia coarctata f. greenii (Baker) M.B.Bayer, Haworthia Revisited: 172 (1999).

Haworthia coarctata var. haworthii Resende, Mem. Soc. Brot. 2: 84 (1943).

Haworthia coarctata var. kraussii Resende, Mem. Soc. Brot. 2: 84 (1943).

Haworthia coarctata f. major Resende, Mem. Soc. Brot. 2: 84 (1943).

Haworthia coarctata f. pseudocoarctata Resende, Mem. Soc. Brot. 2: 84 (1943).

Haworthia coarctata var. sampaiana Resende, Repert. Spec. Nov. Regni Veg. 45: 177 (1938).

Haworthia coarctata var. tenuis (G.G.Sm.) M.B.Bayer, Natl. Cact. Succ. J. 28: 86 (1973).

Haworthia coarctatoides Resende & Viveiros, Portugaliae Acta Biol., Sér. A, Morfol. 2: 176 (1948).

Haworthia columnaris Baker, J. Bot. 27: 45 (1889).

Haworthia compacta (Triebner) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia comptoniana G.G.Sm., J. S. African Bot. 11: 76 (1945).

Haworthia comptoniana f. major Pilbeam, Haworthia & Astroloba: 57 (1983), not validly publ.

Haworthia concava Haw., Saxifrag. Enum. 2: 98 (1821).

Haworthia concinna Haw., Suppl. Pl. Succ.: 59 (1819).

Haworthia confusa Poelln., Repert. Spec. Nov. Regni Veg. 31: 83 (1932).

Haworthia congesta (Salm-Dyck) Parr, Bull. African Succ. Pl. Soc. 6: 195 (1971).

Haworthia consanguinea (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia cooperi Baker, Refug. Bot. 4: t. 233 (1870).

Haworthia cooperi subsp. batteniae (C.L.Scott) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 48 (1997).

Haworthia cooperi var. cooperi.

Haworthia cooperi var. dielsiana (Poelln.) M.B.Bayer, Haworthia Revisited: 51 (1999).

Haworthia cooperi var. doldii M.B.Bayer, Haworthiad 16: 65 (2002).

Haworthia cooperi var. gordoniana (Poelln.) M.B.Bayer, Haworthia Revisited: 52 (1999).

Haworthia cooperi var. gracilis (Poelln.) M.B.Bayer, Haworthiad 16: 64 (2002).

Haworthia cooperi var. hisui (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia cooperi var. isabellae (Poelln.) M.B.Bayer, Haworthiad 16: 65 (2002).

Haworthia cooperi var. leightonii (G.G.Sm.) M.B.Bayer, Haworthia Handb.: 128 (1976).

Haworthia cooperi var. minima M.B.Bayer, Alsterworthia Int. 12(1): 9 (2012), no basionym ref.

Haworthia cooperi var. picturata (M.B.Bayer) M.B.Bayer, Haworthiad 16: 65 (2002).

Haworthia cooperi f. pilifera (Baker) Pilbeam, Haworthia & Astroloba: 58 (1983).

Haworthia cooperi var. pilifera (Baker) M.B.Bayer, Haworthia Revisited: 54 (1999).

Haworthia cooperi var. tenera (Poelln.) M.B.Bayer, Haworthiad 16: 65 (2002).

Haworthia cooperi var. truncata (H.Jacobsen) M.B.Bayer, Haworthia Revisited: 55 (1999).

Haworthia cooperi var. venusta (C.L.Scott) M.B.Bayer, Haworthia Revisited: 56 (1999).

Haworthia cooperi var. viridis (M.B.Bayer) M.B.Bayer, Haworthiad 16: 65 (2002).

Haworthia corallina Baker, J. Linn. Soc., Bot. 18: 205 (1880).

Haworthia cordifolia Haw., Suppl. Pl. Succ.: 60 (1819).

Haworthia coriacea (Resende & Poelln.) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia correcta Poelln., Repert. Spec. Nov. Regni Veg. 43: 103 (1938).

Haworthia correcta var. lucida M.Hayashi, Haworthia Study 7: 14 (2002).

Haworthia corrugata (N.L.Mey. & Gideon F.Sm.) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia crinita M.Hayashi, Haworthia Study 10: 12 (2003).

Haworthia crousii M.Hayashi, Haworthiad 15: 16 (2001).

Haworthia crystallina M.Hayashi, Haworthia Study 15: 116 (2006).

Haworthia cummingii Breuer & M.Hayashi, Haworthia Study 10: 4 (2003).

Haworthia × curta Haw., Suppl. Pl. Succ.: 60 (1819).

Haworthia cuspidata Haw., Suppl. Pl. Succ.: 51 (1819).

Haworthia cyanea (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia cyanea var. amethysta (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia cyanea var. ianthina (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016), not validly publ.

Haworthia cyanea var. succinea (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia cymbiformis (Haw.) Duval, Pl. Succ. Horto Alencon.: 7 (1809).

Haworthia cymbiformis var. angustata Poelln., Repert. Spec. Nov. Regni Veg. 44: 230 (1938).

Haworthia cymbiformis var. brevifolia Triebner & Poelln., Repert. Spec. Nov. Regni Veg. 45: 165 (1938).

Haworthia cymbiformis var. compacta Triebner, Repert. Spec. Nov. Regni Veg. 45: 166 (1938).

Haworthia cymbiformis var. cymbiformis.

Haworthia cymbiformis f. gracilidelineata (Poelln.) Pilbeam, Haworthia & Astroloba: 61 (1983).

Haworthia cymbiformis var. incurvula (Poelln.) M.B.Bayer, Haworthia Handb.: 124 (1976).

Haworthia cymbiformis var. multifolia Triebner, Repert. Spec. Nov. Regni Veg. 45: 166 (1938).

Haworthia cymbiformis f. multifolia (Triebner) Pilbeam, Haworthia & Astroloba: 61 (1983).

Haworthia cymbiformis var. obesa Poelln., Repert. Spec. Nov. Regni Veg. 45: 166 (1938).

Haworthia cymbiformis f. obesa (Poelln.) Pilbeam, Haworthia & Astroloba: 61 (1983).

Haworthia cymbiformis var. obtusa (Haw.) Baker, J. Linn. Soc., Bot. 18: 209 (1880).

Haworthia cymbiformis var. planifolia (Haw.) Baker, J. Linn. Soc., Bot. 18: 209 (1880).

Haworthia cymbiformis f. planifolia (Haw.) Pilbeam, Haworthia & Astroloba: 61 (1983).

Haworthia cymbiformis var. ramosa (G.G.Sm.) M.B.Bayer, Haworthia Revisited: 60 (1999).

Haworthia cymbiformis f. ramosa (G.G.Sm.) M.B.Bayer, Haworthia Handb.: 149 (1976).

Haworthia cymbiformis var. reddii (C.L.Scott) M.B.Bayer, Haworthia Revisited: 61 (1999).

Haworthia cymbiformis var. setulifera (Poelln.) M.B.Bayer, Haworthia Revisited: 62 (1999).

Haworthia cymbiformis f. subarmata Poelln., Repert. Spec. Nov. Regni Veg. 45: 166 (1938).

Haworthia cymbiformis var. transiens (Poelln.) M.B.Bayer, Haworthia Handb.: 162 (1976).

Haworthia cymbiformis var. translucens Triebner & Poelln., Repert. Spec. Nov. Regni Veg. 45: 166 (1938).

Haworthia cymbiformis var. umbraticola (Poelln.) M.B.Bayer, Haworthia Handb.: 164 (1976).

Haworthia davidii (Breuer) M.Hayashi & Breuer, Haworthia Study 14: 11 (2005).

Haworthia decipiens Poelln., Repert. Spec. Nov. Regni Veg. 28: 103 (1930).

Haworthia decipiens var. cyanea M.B.Bayer, Haworthia Revisited: 65 (1999).

Haworthia decipiens var. decipiens.

Haworthia decipiens var. exilis (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia decipiens var. incrassa (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016), not validly publ.

Haworthia decipiens var. minor M.B.Bayer, Haworthia Revisited: 66 (1999).

Haworthia decipiens var. pringlei (C.L.Scott) M.B.Bayer, Haworthia Revisited: 67 (1999).

Haworthia decipiens var. virella M.B.Bayer, Haworthiad 16: 63 (2002).

Haworthia decipiens var. xiphiophylla (Baker) M.B.Bayer, Haworthiad 16: 63 (2002).

Haworthia dekenahii G.G.Sm., J. S. African Bot. 10: 140 (1944).

Haworthia dekenahii var. argenteomaculosa G.G.Sm., J. S. African Bot. 11: 74 (1945).

Haworthia deltoidea (Hook.f.) Parr, Bull. African Succ. Pl. Soc. 6: 195 (1971).

Haworthia deltoidea var. intermedia (A.Berger) Parr, Bull. African Succ. Pl. Soc. 6: 195 (1971).

Haworthia deltoidea var. turgida (Baker) Parr, Bull. African Succ. Pl. Soc. 6: 195 (1971).

Haworthia dentata (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia denticulata Haw., Saxifrag. Enum. 2: 58 (1821).

Haworthia denticulifera (Poelln.) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia depauperata (Poelln.) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia derustensis (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia devriesii Breuer, Avonia 21: 47 (2003).

Haworthia diaphana M.Hayashi, Haworthia Study 15: 116 (2006).

Haworthia dielsiana Poelln., Repert. Spec. Nov. Regni Veg. 28: 103 (1930).

Haworthia dimorpha (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia distincta N.E.Br., Gard. Chron., n.s., 6: 130 (1876).

Haworthia divergens M.B.Bayer, Haworthia Handb.: 113 (1976).

Haworthia divergens var. meiringii (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia diversicolor (Triebner & Poelln.) M.Hayashi, Haworthia Study 22: 11 (2010).

Haworthia diversifolia Poelln., Repert. Spec. Nov. Regni Veg. 41: 200 (1937).

Haworthia dodsoniana (Uitewaal) Parr, Bull. African Succ. Pl. Soc. 6: 195 (1971).

Haworthia doldii (M.B.Bayer) M.Hayashi, Haworthia Study 14: 11 (2005).

Haworthia dura M.Hayashi, Haworthia Study 14: 11 (2005), herbarium where type conserved not specified.

Haworthia egregia (Poelln.) Parr, Bull. African Succ. Pl. Soc. 6: 195 (1971).

Haworthia egregia var. fardeniana (Uitewaal) Parr, Bull. African Succ. Pl. Soc. 6: 195 (1971).

Haworthia eilyae Poelln., Kakteenkunde 1937: 152 (1937).

Haworthia eilyae var. poellnitziana Resende, Mem. Soc. Brot. 2: 89 (1943).

Haworthia eilyae var. zantneriana Resende, Mem. Soc. Brot. 2: 90 (1943).

Haworthia elizeae Breuer, Avonia 21: 48 (2003).

Haworthia emelyae Poelln., Repert. Spec. Nov. Regni Veg. 42: 271 (1937).

Haworthia emelyae var. beukmannii Poelln., Repert. Spec. Nov. Regni Veg. 49: 29 (1940).

Haworthia emelyae var. comptoniana (G.G.Sm.) J.D.Venter & S.A.Hammer, Cact. Succ. J. (Los Angeles) 69: 77 (1997).

Haworthia emelyae var. emelyae.

Haworthia emelyae var. major (G.G.Sm.) M.B.Bayer, Aloe 34: 6 (1997).

Haworthia emelyae var. multifolia M.B.Bayer, Natl. Cact. Succ. J. 34: 31 (1979).

Haworthia emeralda M.Hayashi, Haworthia Study 12: 11 (2004).

Haworthia eminens M.Hayashi, Haworthia Study 10: 13 (2003).

Haworthia engleri Dinter, Neue Pfl. Südw.-Afr.: 31 (1914).

Haworthia enigma M.Hayashi, Haworthia Study 7: 14 (2002).

Haworthia erecta Haw., Saxifrag. Enum. 2: 55 (1821).

Haworthia erii M.Hayashi, Haworthia Study 14: 11 (2005), herbarium where type conserved not specified.

Haworthia ernstii M.Hayashi, Haworthia Study 14: 11 (2005), herbarium where type conserved not specified.

Haworthia esterhuizenii M.Hayashi, Haworthia Study 7: 14 (2002).

Haworthia exilis M.Hayashi, Haworthia Study 10: 12 (2003).

Haworthia × expansa Haw., Syn. Pl. Succ.: 91 (1812).

Haworthia fallax Poelln., Repert. Spec. Nov. Regni Veg. 31: 83 (1932), orth. var.

Haworthia fasciata (Willd.) Haw., Saxifrag. Enum. 2: 54 (1821).

Haworthia fasciata var. armata Poelln., Cact. J. (Croydon) 6: 18 (1937).

Haworthia fasciata f. browniana (Poelln.) M.B.Bayer, Haworthia Handb.: 105 (1976).

Haworthia fasciata var. browniana (Poelln.) C.L.Scott, Gen. Haworthia: 21 (1985).

Haworthia fasciata var. caespitosa A.Berger in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 92 (1908).

Haworthia fasciata var. major (Salm-Dyck) Haw., Saxifrag. Enum. 2: 54 (1821).

Haworthia fasciata f. ovatolanceolata Poelln., Repert. Spec. Nov. Regni Veg. 43: 96 (1938).

Haworthia fasciata f. sparsa Poelln., Repert. Spec. Nov. Regni Veg. 43: 96 (1938).

Haworthia fasciata f. subconfluens (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 43: 95 (1938).

Haworthia fasciata var. subconfluens Poelln., Kakteen And. Sukk. 9: 133 (1937).

Haworthia fasciata f. vanstaadensis Poelln., Repert. Spec. Nov. Regni Veg. 43: 97 (1938).

Haworthia fasciata f. variabilis Poelln., Repert. Spec. Nov. Regni Veg. 43: 96 (1938).

Haworthia fergusoniae Poelln., Repert. Spec. Nov. Regni Veg. 28: 103 (1930).

Haworthia ferox Poelln., Repert. Spec. Nov. Regni Veg. 31: 84 (1932).

Haworthia flaccida (M.B.Bayer) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia flavida M.Hayashi, Haworthia Study 10: 13 (2003).

Haworthia floccosa M.Hayashi, Haworthia Study 10: 13 (2003).

Haworthia florens M.Hayashi, Haworthia Study 12: 11 (2004).

Haworthia floribunda Poelln., Repert. Spec. Nov. Regni Veg. 40: 149 (1936).

Haworthia floribunda var. dentata M.B.Bayer, Haworthia Revisited: 73 (1999).

Haworthia floribunda var. floribunda.

Haworthia floribunda var. major M.B.Bayer, Haworthia Revisited: 74 (1999).

Haworthia fluffa M.Hayashi, Haworthia Study 12: 9 (2004).

Haworthia foliolosa (Haw.) Haw., Syn. Pl. Succ.: 99 (1812).

Haworthia fouchei Poelln., Succulenta (Netherlands) 22: 28 (1940).

Haworthia fukuyae M.Hayashi, Haworthia Study 17: 16 (2007).

Haworthia fulva G.G.Sm., J. S. African Bot. 9: 101 (1943).

Haworthia fusca Breuer, Alsterworthia Int., Spec. Issue 7: 9 (2004).

Haworthia geraldii C.L.Scott, J. S. African Bot. 31: 123 (1965).

Haworthia giftbergensis (G.G.Sm.) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia gigantea (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia gigas Poelln., Repert. Spec. Nov. Regni Veg. 31: 84 (1932).

Haworthia glabrata (Salm-Dyck) Baker, J. Linn. Soc., Bot. 18: 206 (1880).

Haworthia glabrata var. concolor (Salm-Dyck) Baker, J. Linn. Soc., Bot. 18: 206 (1880).

Haworthia glabrata var. perviridis (Salm-Dyck) Baker, J. Linn. Soc., Bot. 18: 206 (1880).

Haworthia glauca Baker, J. Linn. Soc., Bot. 18: 203 (1880).

Haworthia glauca f. armstrongii (Poelln.) M.B.Bayer, Haworthia Handb.: 99 (1976).

Haworthia glauca var. herrei (Poelln.) M.B.Bayer, Haworthia Handb.: 122 (1976).

Haworthia glauca f. jacobseniana (Poelln.) Pilbeam, Haworthia & Astroloba: 74 (1983).

Haworthia glauca f. jonesiae (Poelln.) Pilbeam, Haworthia & Astroloba: 74 (1983).

Haworthia glaucophylla (M.B.Bayer) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia globifera (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia globosiflora G.G.Sm., J. S. African Bot. 16: 11 (1950).

Haworthia gordoniana Poelln., Repert. Spec. Nov. Regni Veg. 42: 269 (1937).

Haworthia gracilidelineata Poelln., Repert. Spec. Nov. Regni Veg. 31: 84 (1932).

Haworthia gracilis Poelln., Repert. Spec. Nov. Regni Veg. 27: 133 (1929).

Haworthia gracilis var. isabellae (Poelln.) M.B.Bayer, Haworthia Revisited: 77 (1999).

Haworthia gracilis var. minor (M.B.Bayer) M.Hayashi, Haworthia Study 9: 12 (2003).

Haworthia gracilis var. picturata M.B.Bayer, Haworthia Revisited: 78 (1999).

Haworthia gracilis var. tenera (Poelln.) M.B.Bayer, Haworthia Revisited: 77 (1999).

Haworthia gracilis var. viridis M.B.Bayer, Haworthia Revisited: 79 (1999).

Haworthia graminifolia G.G.Sm., J. S. African Bot. 8: 247 (1942).

Haworthia graminifolia var. derustensis (M.B.Bayer) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia granata (Willd.) Haw., Suppl. Pl. Succ.: 57 (1819).

Haworthia granata var. polyphylla Haw., Saxifrag. Enum. 2: 203 (1821).

Haworthia granulata Marloth, Trans. Roy. Soc. South Africa 2: 39 (1912).

Haworthia greenii Baker, J. Linn. Soc., Bot. 18: 202 (1880).

Haworthia greenii f. bakeri Resende, Mem. Soc. Brot. 2: 87 (1943).

Haworthia greenii f. minor Resende, Mem. Soc. Brot. 2: 87 (1943).

Haworthia greenii var. silvicola G.G.Sm., J. S. African Bot. 9: 103 (1943).

Haworthia grenieri Breuer, Alsterworthia Int. 17(3): 14 (2017).

Haworthia groenewaldii Breuer, Alsterworthia Int. 11(2): 15 (2011).

Haworthia guttata Uitewaal, Desert Pl. Life 19: 101 (1947).

Haworthia gweneana Parr, Bull. African Succ. Pl. Soc. 6: 195 (1971).

Haworthia haageana Poelln., Repert. Spec. Nov. Regni Veg. 28: 104 (1930).

Haworthia haageana var. subreticulata Poelln., Cact. J. (Croydon) 5: 37 (1937).

Haworthia habdomadis Poelln., Repert. Spec. Nov. Regni Veg. 46: 271 (1939).

Haworthia habdomadis var. inconfluens (Poelln.) M.B.Bayer, Natl. Cact. Succ. J. 32: 18 (1977).

Haworthia habdomadis var. morrisiae (Poelln.) M.B.Bayer, Natl. Cact. Succ. J. 32: 18 (1977).

Haworthia hamata M.Hayashi, Haworthia Study 10: 12 (2003).

Haworthia hamata var. subhamata (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia harlandiana Parr, Bull. African Succ. Pl. Soc. 6: 195 (1971).

Haworthia harryi M.Hayashi, Haworthia Study 12: 9 (2004).

Haworthia hastata M.Hayashi, Haworthia Study 12: 9 (2004).

Haworthia hayashii M.Hayashi, Haworthia Study 7: 14 (2002).

Haworthia heidelbergensis G.G.Sm., J. S. African Bot. 14: 42 (1948).

Haworthia heidelbergensis var. heidelbergensis.

Haworthia heidelbergensis var. minor M.B.Bayer, Haworthia Revisited: 82 (1999).

Haworthia heidelbergensis var. scabra M.B.Bayer, Haworthia Revisited: 82 (1999).

Haworthia heidelbergensis var. toonensis M.B.Bayer, Haworthia Revisited: 83 (1999).

Haworthia helmiae Poelln., Repert. Spec. Nov. Regni Veg. 41: 201 (1937).

Haworthia hemicrypta (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia henriquesii Resende, Bol. Soc. Brot., sér. 2, 15: 160 (1941).

Haworthia herbacea (Mill.) Stearn, Cact. Succ. J. Gr. Brit. 7: 40 (1938).

Haworthia herbacea var. flaccida M.B.Bayer, Haworthia Revisited: 86 (1999).

Haworthia herbacea var. herbacea.

Haworthia herbacea var. lupula M.B.Bayer, Haworthia Revisited: 86 (1999).

Haworthia herbacea var. paynei (Poelln.) M.B.Bayer, Haworthia Revisited: 87 (1999).

Haworthia herrei Poelln., Repert. Spec. Nov. Regni Veg. 26: 24 (1929).

Haworthia herrei var. depauperata Poelln., Repert. Spec. Nov. Regni Veg. 31: 86 (1932).

Haworthia herrei var. poellnitzii Resende, Mem. Soc. Brot. 2: 89 (1943).

Haworthia hilliana Poelln., Desert Pl. Life 9: 103 (1937).

Haworthia hisui M.Hayashi, Haworthia Study 12: 10 (2004).

Haworthia hurlingii Poelln., Repert. Spec. Nov. Regni Veg. 41: 202 (1937).

Haworthia hurlingii var. ambigua Triebner & Poelln., Repert. Spec. Nov. Regni Veg. 63: 93 (1938).

Haworthia × hybrida (Salm-Dyck) Haw., Saxifrag. Enum. 2: 51 (1821).

Haworthia ianthina M.Hayashi, Haworthia Study 14: 12 (2005), herbarium where type conserved not specified.

Haworthia icosiphylla Baker, J. Linn. Soc., Bot. 18: 207 (1880).

Haworthia ikra Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia imbricata (Haw.) Haw., Syn. Pl. Succ.: 98 (1812).

Haworthia inconfluens (Poelln.) M.B.Bayer, Haworthia Handb.: 123 (1976).

Haworthia inconfluens var. crystallina (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia inconfluens var. habdomadis (Poelln.) M.B.Bayer, Haworthia Handb.: 121 (1976).

Haworthia inconfluens var. lockwoodii (Archibald) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia inconfluens var. morrisiae (Poelln.) M.B.Bayer, Haworthia Handb.: 137 (1976).

Haworthia incrassa M.Hayashi, Haworthia Study 14: 12 (2005), herbarium where type conserved not specified.

Haworthia incurvula Poelln., Repert. Spec. Nov. Regni Veg. 31: 85 (1932).

Haworthia indigoa M.Hayashi, Haworthia Study 12: 13 (2004).

Haworthia indigoa var. truterorum (Breuer & Marx) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia indurata Haw., Saxifrag. Enum. 2: 49 (1821).

Haworthia inermis Poelln., Repert. Spec. Nov. Regni Veg. 31: 85 (1932).

Haworthia insipida Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia integra Poelln., Repert. Spec. Nov. Regni Veg. 33: 239 (1933).

Haworthia integra var. standeri Esterhuizen, Haworthiad 14: 21 (2000).

Haworthia intermedia Poelln., Kakteenkunde 1937: 133 (1937).

Haworthia intermedia var. livida (M.B.Bayer) Esterhuizen, Alsterworthia Int. 3(1): 12 (2003).

Haworthia intermedia var. maculata (Poelln.) Esterhuizen, Alsterworthia Int. 3(1): 12 (2003).

Haworthia intermedia var. notabilis (Poelln.) Esterhuizen, Alsterworthia Int. 3(1): 12 (2003).

Haworthia isabellae Poelln., Repert. Spec. Nov. Regni Veg. 44: 226 (1938).

Haworthia isabellae var. arabesqua (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia isabellae var. bella (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia isabellae var. ligulata (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia jacobseniana Poelln., Desert Pl. Life 9: 102 (1937).

Haworthia jadea M.Hayashi, Haworthia Study 12: 13 (2004).

Haworthia jakubii Breuer, Alsterworthia Int., Spec. Issue 7: 10 (2004).

Haworthia × janseana Uitewaal, Cact. & Vetpl. 6: 45 (1940).

Haworthia jansenvillensis Breuer, Alsterworthia Int. 4(2): 16 (2004).

Haworthia jansenvillensis var. crinita (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia jansenvillensis var. eminens (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia jansenvillensis var. flavida (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia jansenvillensis var. fluffa (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia jansenvillensis var. mollis (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 5 (2016).

Haworthia jansenvillensis var. regina (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia janvlokii (Breuer) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia jeffreis M.Hayashi, Haworthia Study 12: 10 (2004).

Haworthia joeyae C.L.Scott, Bradleya 13: 80 (1985).

Haworthia johanii (M.Hayashi) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia joleneae M.Hayashi, Haworthia Study 29: 4 (2014).

Haworthia jonesiae Poelln., Kakteenkunde 1937: 153 (1937).

Haworthia joubertii M.Hayashi, Haworthia Study 14: 16 (2005), herbarium where type conserved not specified.

Haworthia keithii (G.G.Sm.) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia kemari M.Hayashi, Haworthia Study 9: 11 (2003).

Haworthia × kewensis Poelln., Repert. Spec. Nov. Regni Veg. 49: 57 (1940).

Haworthia kingiana Poelln., Repert. Spec. Nov. Regni Veg. 41: 203 (1937).

Haworthia koelmaniorum Oberm. & D.S.Hardy, Fl. Pl. Africa 38: t. 1502 (1967).

Haworthia koelmaniorum var. mcmurtryi (C.L.Scott) M.B.Bayer, Haworthia Revisited: 181 (1999).

Haworthia kogmanensis M.Hayashi, Haworthia Study 14: 14 (2005), herbarium where type conserved not specified.

Haworthia kondoi M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia lachnosa M.Hayashi, Haworthia Study 16: 16 (2006).

Haworthia laeta M.Hayashi, Haworthia Study 12: 13 (2004).

Haworthia laetevirens Haw., Suppl. Pl. Succ.: 43 (1819).

Haworthia laevis Haw., Saxifrag. Enum. 2: 52 (1821).

Haworthia lapis Breuer & M.Hayashi, Alsterworthia Int., Spec. Issue 7: 6 (2004).

Haworthia lapis var. rava (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016), not validly publ.

Haworthia lateganiae Poelln., Desert Pl. Life 9: 103 (1937).

Haworthia latericia M.Hayashi, Haworthia Study 11: 14 (2004).

Haworthia lavrani (C.L.Scott) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia laxa M.Hayashi, Haworthia Study 14: 14 (2005), herbarium where type conserved not specified.

Haworthia lazulis M.Hayashi, Haworthia Study 14: 11 (2005), herbarium where type conserved not specified.

Haworthia leightonii G.G.Sm., J. S. African Bot. 16: 10 (1950).

Haworthia leightonii var. davidii Breuer, Avonia 21: 49 (2003).

Haworthia lepida G.G.Sm., J. S. African Bot. 10: 21 (1944).

Haworthia ligulata M.Hayashi, Haworthia Study 12: 6 (2004).

Haworthia limbata M.Hayashi, Haworthia Study 14: 16 (2005), herbarium where type conserved not specified.

Haworthia limifolia Marloth, Trans. Roy. Soc. South Africa 1: 409 (1910).

Haworthia limifolia var. arcana Gideon F.Sm. & N.R.Crouch, Bradleya 19: 119 (2001).

Haworthia limifolia var. diploidea Resende, Repert. Spec. Nov. Regni Veg. 48: 200 (1940).

Haworthia limifolia var. gigantea M.B.Bayer, J. S. African Bot. 28: 215 (1962).

Haworthia limifolia var. glaucophylla M.B.Bayer, Aloe 40: 50 (2003).

Haworthia limifolia var. keithii G.G.Sm., J. S. African Bot. 16: 4 (1950).

Haworthia limifolia var. koelmaniorum (Oberm. & D.S.Hardy) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 38 (1997).

Haworthia limifolia f. major Resende, Mem. Soc. Brot. 2: 94 (1943).

Haworthia limifolia f. marlothiana Resende, Bol. Soc. Brot. 14: 200 (1940).

Haworthia limifolia var. marlothiana (Resende) Resende, Mem. Soc. Brot. 2: 93 (1943).

Haworthia limifolia f. pimentellii Resende, Mem. Soc. Brot. 2: 94 (1943).

Haworthia limifolia f. schuldtiana Resende, Bol. Soc. Brot. 14: 200 (1940).

Haworthia limifolia var. schuldtiana (Resende) Resende, Mem. Soc. Brot. 2: 93 (1943).

Haworthia limifolia var. stolonifera Resende, Mem. Soc. Brot. 2: 94 (1943).

Haworthia limifolia var. striata Pilbeam in ?, without type

Haworthia limifolia var. tetraploidea Resende, Repert. Spec. Nov. Regni Veg. 48: 114 (1940).

Haworthia limifolia var. ubomboensis (I.Verd.) G.G.Sm., J. S. African Bot. 16: 3 (1950).

Haworthia limpida Haw., Suppl. Pl. Succ.: 51 (1819).

Haworthia lisbonensis Resende, Portugaliae Acta Biol., Sér. B, Sist. 2: 175 (1946).

Haworthia lockwoodii Archibald, Fl. Pl. South Africa 20: t. 792 (1940).

Haworthia longiana Poelln., Repert. Spec. Nov. Regni Veg. 41: 203 (1937).

Haworthia longiana var. albinota G.G.Sm., J. S. African Bot. 14: 44 (1948).

Haworthia longiaristata Poelln., Kakteenkunde 1937: 134 (1937).

Haworthia longibracteata G.G.Sm., J. S. African Bot. 11: 75 (1945).

Haworthia lupula (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia luri M.Hayashi, Haworthia Study 14: 11 (2005), herbarium where type conserved not specified.

Haworthia luteorosea Uitewaal, Cact. & Vetpl. 5: 88 (1939).

Haworthia maculata (Poelln.) M.B.Bayer, Haworthia Handb.: 130 (1976).

Haworthia maculata var. intermedia (Poelln.) M.B.Bayer, Haworthia Revisited: 91 (1999).

Haworthia maculata var. livida (M.B.Bayer) M.B.Bayer, Haworthiad, Sp. ed.: 10 (2012).

Haworthia maculata var. maculata.

Haworthia magnifica Poelln., Repert. Spec. Nov. Regni Veg. 33: 239 (1933).

Haworthia magnifica var. acuminata (M.B.Bayer) M.B.Bayer, Aloe 34: 6 (1997).

Haworthia magnifica var. asperula (Haw.) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia magnifica var. atrofusca (G.G.Sm.) M.B.Bayer, Natl. Cact. Succ. J. 32: 18 (1977).

Haworthia magnifica var. dekenahii (G.G.Sm.) M.B.Bayer, Aloe 34: 6 (1997).

Haworthia magnifica var. magnifica.

Haworthia magnifica var. major (G.G.Sm.) M.B.Bayer, Natl. Cact. Succ. J. 32: 18 (1977).

Haworthia magnifica var. maraisii (Poelln.) M.B.Bayer, Natl. Cact. Succ. J. 32: 18 (1977).

Haworthia magnifica var. meiringii (M.B.Bayer) M.B.Bayer, Natl. Cact. Succ. J. 32: 18 (1977).

Haworthia magnifica var. notabilis (Poelln.) M.B.Bayer, Natl. Cact. Succ. J. 32: 18 (1977).

Haworthia magnifica var. obserata (Marx) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia magnifica var. paradoxa (Poelln.) M.B.Bayer, Natl. Cact. Succ. J. 32: 18 (1977), basionym page incorrect.

Haworthia magnifica var. splendens J.D.Venter & S.A.Hammer, Cact. Succ. J. (Los Angeles) 70: 180 (1998).

Haworthia major (Aiton) Duval, Pl. Succ. Horto Alencon.: 7 (1809).

Haworthia × mantelii Uitewaal, Succulenta (Netherlands) 28: 7 (1947).

Haworthia maraisii Poelln., Repert. Spec. Nov. Regni Veg. 38: 194 (1935).

Haworthia maraisii var. livida (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia maraisii var. magnifica (Poelln.) M.B.Bayer, Haworthia Handb.: 131 (1976).

Haworthia maraisii var. major (G.G.Sm.) M.B.Bayer, Haworthia Handb.: 132 (1976).

Haworthia maraisii var. maraisii.

Haworthia maraisii var. meiringii M.B.Bayer, Haworthia Handb.: 134 (1976).

Haworthia maraisii var. notabilis (Poelln.) M.B.Bayer, Haworthia Handb.: 141 (1976).

Haworthia maraisii var. schuldtiana (Poelln.) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia maraisii var. toonensis (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia margaritifera (L.) Haw., Suppl. Pl. Succ.: 55 (1819).

Haworthia margaritifera subvar. acuminata (Salm-Dyck) A.Berger in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 89 (1908).

Haworthia margaritifera var. corallina Baker, J. Linn. Soc., Bot. 18: 205 (1880).

Haworthia margaritifera var. erecta (Haw.) Baker, J. Linn. Soc., Bot. 18: 201 (1880).

Haworthia margaritifera var. granata (Willd.) Baker, J. Linn. Soc., Bot. 18: 205 (1880).

Haworthia margaritifera subvar. laetivirens (Salm-Dyck) A.Berger in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 88 (1908).

Haworthia margaritifera var. laevior (Salm-Dyck) Uitewaal, Succulenta (Netherlands) 28: 51 (1947).

Haworthia margaritifera subvar. laevior (Salm-Dyck) A.Berger in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 89 (1908).

Haworthia margaritifera subvar. major (Salm-Dyck) A.Berger in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 89 (1908).

Haworthia margaritifera subvar. maxima (Haw.) in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 89 (1908).

Haworthia margaritifera subvar. minor (Aiton) A.Berger in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 89 (1908).

Haworthia margaritifera subvar. multipapillosa (Salm-Dyck) A.Berger in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 89 (1908).

Haworthia margaritifera subvar. polyphylla (Haw.) Uitewaal, Succulenta (Netherlands) 28: 51 (1947).

Haworthia margaritifera var. semimargaritifera (Salm-Dyck) Baker, J. Linn. Soc., Bot. 18: 204 (1880).

Haworthia margaritifera var. subalbicans (Salm-Dyck) A.Berger in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 89 (1908).

Haworthia marginata (Lam.) Stearn, Cact. Succ. J. Gr. Brit. 7: 39 (1938).

Haworthia marginata var. laevis (Haw.) H.Jacobsen, Handb. Succ. Pl. 2: 567 (1960).

Haworthia marginata var. ramifera (Haw.) H.Jacobsen, Handb. Succ. Pl. 2: 567 (1960).

Haworthia marginata var. virescens (Haw.) Uitewaal, Succulenta (Netherlands) 21: 40 (1939).

Haworthia marlothiana Resende, Repert. Spec. Nov. Regni Veg. 48: 116 (1940).

Haworthia marmorata M.Hayashi, Haworthia Study 15: 14 (2006).

Haworthia marumiana Uitewaal, Cact. & Vetpl. 6: 33 (1940).

Haworthia marumiana var. archeri (W.F.Barker ex M.B.Bayer) M.B.Bayer, Haworthia Revisited: 104 (1999).

Haworthia marumiana var. batesiana (Uitewaal) M.B.Bayer, Haworthia Revisited: 105 (1999).

Haworthia marumiana var. dimorpha (M.B.Bayer) M.B.Bayer, Haworthia Revisited: 106 (1999).

Haworthia marumiana var. marmorata (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia marumiana var. marumiana.

Haworthia marumiana var. reddii (C.L.Scott) M.B.Bayer, Haworthia Update 7(4): 34 (2012).

Haworthia marumiana var. viridis M.B.Bayer, Haworthia Revisited: 107 (1999).

Haworthia marxii Gildenh., Aloe 44: 4 (2007).

Haworthia maughanii Poelln., Repert. Spec. Nov. Regni Veg. 31: 85 (1932).

Haworthia maxima (Haw.) Duval, Pl. Succ. Horto Alencon.: 7 (1809).

Haworthia mclarenii Poelln., Desert Pl. Life 11: 107 (1939).

Haworthia mcmurtryi C.L.Scott, Cact. Succ. J. (Los Angeles) 56: 69 (1984).

Haworthia minima (Aiton) Haw., Syn. Pl. Succ.: 29 (1812).

Haworthia minima Baker, J. Linn. Soc., Bot. 18: 215 (1880), nom. illeg.

Haworthia minima var. confusa (Poelln.) Poelln., Kakteenkunde 1939: 39 (1939).

Haworthia minima var. major Poelln., Kakteenkunde 1938: 39 (1938).

Haworthia minima var. poellnitziana (Uitewaal) M.B.Bayer, Haworthia Revisited: 213 (1999).

Haworthia minor (Aiton) Duval, Pl. Succ. Horto Alencon.: 7 (1809).

Haworthia minutissima Poelln., Desert Pl. Life 11: 192 (1939).

Haworthia mirabilis (Haw.) Haw., Syn. Pl. Succ.: 95 (1812).

Haworthia mirabilis var. atrofusca (G.G.Sm.) M.B.Bayer, Haworthia Update 7(4): 34 (2012).

Haworthia mirabilis subsp. badia (Poelln.) M.B.Bayer, Haworthia Handb.: 101 (1976).

Haworthia mirabilis var. badia (Poelln.) M.B.Bayer, Haworthia Revisited: 109 (1999).

Haworthia mirabilis f. beukmannii (Poelln.) Pilbeam, Haworthia & Astroloba: 98 (1983).

Haworthia mirabilis var. beukmannii (Poelln.) M.B.Bayer, Haworthia Revisited: 110 (1999).

Haworthia mirabilis var. calcarea M.B.Bayer, Haworthia Revisited: 110 (1999).

Haworthia mirabilis var. consanguinea M.B.Bayer, Haworthia Revisited: 111 (1999).

Haworthia mirabilis var. depauperata (Poelln.) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia mirabilis var. heidelbergensis (G.G.Sm.) M.B.Bayer, Haworthia Update 7(4): 34 (2012).

Haworthia mirabilis var. magnifica (Poelln.) M.B.Bayer, Haworthia Update 7(4): 34 (2012).

Haworthia mirabilis var. maraisii (Poelln.) M.B.Bayer, Haworthia Update 7(4): 34 (2012).

Haworthia mirabilis var. meiringii (M.B.Bayer) M.B.Bayer, Haworthia Update 7(4): 35 (2012).

Haworthia mirabilis var. mirabilis.

Haworthia mirabilis subsp. mundula (G.G.Sm.) M.B.Bayer, Haworthia Handb.: 139 (1976).

Haworthia mirabilis var. mundula (G.G.Sm.) M.B.Bayer, Haworthia Update 7(4): 35 (2012).

Haworthia mirabilis f. napierensis (Triebner & Poelln.) Pilbeam, Haworthia & Astroloba: 98 (1983), basionym page incorrect .

Haworthia mirabilis var. notabilis (Poelln.) M.B.Bayer, Haworthia Update 7(4): 35 (2012).

Haworthia mirabilis var. paradoxa (Poelln.) M.B.Bayer, Aloe 34: 6 (1997).

Haworthia mirabilis f. rubrodentata (Triebner & Poelln.) Pilbeam, Haworthia & Astroloba: 97 (1983).

Haworthia mirabilis var. scabra (M.B.Bayer) M.B.Bayer, Haworthia Update 7(4): 35 (2012).

Haworthia mirabilis var. splendens (J.D.Venter & S.A.Hammer) M.B.Bayer, Haworthia Update 7(4): 35 (2012).

Haworthia mirabilis f. sublineata (Poelln.) Pilbeam, Haworthia & Astroloba: 97 (1983).

Haworthia mirabilis var. sublineata (Poelln.) M.B.Bayer, Haworthia Revisited: 113 (1999).

Haworthia mirabilis var. toonensis (M.B.Bayer) M.B.Bayer, Haworthia Update 7(4): 35 (2012).

Haworthia mirabilis var. triebneriana (Poelln.) M.B.Bayer, Haworthia Revisited: 113 (1999).

Haworthia modesta (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia mollis M.Hayashi, Haworthia Study 10: 14 (2003).

Haworthia montana M.Hayashi, Haworthia Study 14: 14 (2005), herbarium where type conserved not specified.

Haworthia monticola Fourc., Trans. Roy. Soc. South Africa 21: 78 (1932).

Haworthia monticola var. asema M.B.Bayer, Haworthia Revisited: 117 (1999).

Haworthia monticola var. bronkhorstii (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia monticola var. monticola.

Haworthia morrisiae Poelln., Kakteenkunde 1937: 132 (1937).

Haworthia × mortonii Breuer, Alsterworthia Int. 7: 22 (2007).

Haworthia mucronata Haw., Suppl. Pl. Succ.: 50 (1819).

Haworthia mucronata f. acuminata Poelln., Repert. Spec. Nov. Regni Veg. 49: 29 (1940).

Haworthia mucronata var. altilinea (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 45 (1997).

Haworthia mucronata var. bicarinata (Triebner) Poelln., Repert. Spec. Nov. Regni Veg. 49: 30 (1940).

Haworthia mucronata var. calitzdorpensis Breuer, Avonia 21: 50 (2003).

Haworthia mucronata var. habdomadis (Poelln.) M.B.Bayer, Haworthia Revisited: 120 (1999).

Haworthia mucronata f. inconfluens (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 49: 29 (1940).

Haworthia mucronata var. inconfluens (Poelln.) M.B.Bayer, Haworthia Revisited: 121 (1999).

Haworthia mucronata f. inermis (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 49: 29 (1940).

Haworthia mucronata var. limpida (Haw.) Poelln., Repert. Spec. Nov. Regni Veg. 49: 20 (1940).

Haworthia mucronata subsp. lockwoodii (Archibald) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 45 (1997).

Haworthia mucronata f. minor (Triebner) Poelln., Repert. Spec. Nov. Regni Veg. 49: 30 (1940).

Haworthia mucronata var. morrisiae (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 49: 29 (1940).

Haworthia mucronata var. mucronata.

Haworthia mucronata var. nortieri (G.G.Sm.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 45 (1997).

Haworthia mucronata var. polyphylla (Baker) Poelln., Repert. Spec. Nov. Regni Veg. 49: 29 (1940).

Haworthia mucronata var. rooibergensis Esterhuizen & Battista, Haworthiad 13: 5 (1999).

Haworthia mucronata var. rycroftiana (M.B.Bayer) M.B.Bayer, Haworthia Revisited: 124 (1999).

Haworthia mucronata var. setulifera (Triebner) Poelln., Repert. Spec. Nov. Regni Veg. 49: 30 (1940).

Haworthia mucronata f. subglauca (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 49: 29 (1940).

Haworthia multifaria Haw., Philos. Mag. J. 66: 300 (1824).

Haworthia multifolia (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia multifolia var. breueri (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia multifolia var. major (G.G.Sm.) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia multilineata (G.G.Sm.) C.L.Scott, Gen. Haworthia: 134 (1985).

Haworthia mundula G.G.Sm., J. S. African Bot. 12: 8 (1946).

Haworthia mundula var. calcarea (M.B.Bayer) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia musculina G.G.Sm., J. S. African Bot. 14: 49 (1948).

Haworthia mutabilis Poelln., Repert. Spec. Nov. Regni Veg. 44: 132 (1938).

Haworthia mutica Haw., Saxifrag. Enum. 2: 55 (1821).

Haworthia mutica var. nigra M.B.Bayer, Haworthia Revisited: 126 (1999).

Haworthia namaquensis (M.B.Bayer) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia nigra (Haw.) Baker, J. Linn. Soc., Bot. 18: 203 (1880).

Haworthia nigra var. angustata (Poelln.) Uitewaal, Succulenta (Netherlands) 29: 51 (1948).

Haworthia nigra f. angustata (Poelln.) Pilbeam, Haworthia & Astroloba: 101 (1983).

Haworthia nigra var. diversifolia (Poelln.) Uitewaal, Succulenta (Netherlands) 29: 51 (1948).

Haworthia nigra var. elongata (Poelln.) Uitewaal, Succulenta (Netherlands) 29: 51 (1948).

Haworthia nigra f. nana (Poelln.) Uitewaal, Succulenta (Netherlands) 29: 51 (1948).

Haworthia nigra var. pusilla (Poelln.) Uitewaal, Succulenta (Netherlands) 29: 51 (1948).

Haworthia nigra var. schmidtiana (Poelln.) Uitewaal, Succulenta (Netherlands) 29: 51 (1948).

Haworthia nigra var. suberecta (Poelln.) Uitewaal, Succulenta (Netherlands) 29: 51 (1948).

Haworthia nigrata M.Hayashi, Haworthia Study 15: 14 (2006).

Haworthia nigricans Haw., Philos. Mag. J. 66: 301 (1824).

Haworthia nitida (Salm-Dyck) G.Don in J.C.Loudon, Hort. Brit.: 128 (1830).

Haworthia nitidula Poelln., Desert Pl. Life 11: 192 (1939).

Haworthia nitidula var. opaca Poelln., Desert Pl. Life 20: 6 (1948), nom. nud.

Haworthia nortieri G.G.Sm., J. S. African Bot. 12: 13 (1946).

Haworthia nortieri var. agnis (Battista) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia nortieri var. albispina (M.Hayashi) M.B.Bayer, Haworthia Update 7(4): 35 (2012).

Haworthia nortieri var. devriesii (Breuer) M.B.Bayer, Haworthia Update 7(4): 36 (2012).

Haworthia nortieri var. giftbergensis G.G.Sm., J. S. African Bot. 16: 7 (1950).

Haworthia nortieri var. globosiflora (G.G.Sm.) M.B.Bayer, Haworthia Handb.: 119 (1976).

Haworthia nortieri var. montana G.G.Sm., J. S. African Bot. 16: 6 (1950).

Haworthia nortieri var. montana (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016), not validly publ.

Haworthia nortieri var. nortieri.

Haworthia nortieri var. pehlemanniae (C.L.Scott) M.B.Bayer, Haworthia Revisited: 130 (1999).

Haworthia notabilis Poelln., Repert. Spec. Nov. Regni Veg. 44: 134 (1938).

Haworthia notabilis var. diversicolor (Triebner & Poelln.) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia obesa (Poelln.) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia obserata Marx, Alsterworthia Int. 14: 17 (2014).

Haworthia obtusa Haw., Philos. Mag. J. 67: 282 (1825).

Haworthia obtusa f. acuminata (Poelln.) Uitewaal, Succulenta (Netherlands) 29: 50 (1948).

Haworthia obtusa var. columnaris (Baker) Uitewaal, Succulenta (Netherlands) 29: 50 (1948).

Haworthia obtusa var. dielsiana (Poelln.) Uitewaal, Succulenta (Netherlands) 29: 50 (1948).

Haworthia obtusa var. gordoniana (Poelln.) Uitewaal, Succulenta (Netherlands) 29: 50 (1948).

Haworthia obtusa var. pilifera (Baker) Uitewaal, Succulenta (Netherlands) 29: 50 (1948).

Haworthia obtusa var. salina (Poelln.) Uitewaal, Succulenta (Netherlands) 29: 50 (1948).

Haworthia obtusa var. stayneri (Poelln.) Uitewaal, Succulenta (Netherlands) 29: 50 (1948).

Haworthia obtusa f. truncata H.Jacobsen, Natl. Cact. Succ. J. 10: 81 (1955).

Haworthia oculata M.Hayashi, Haworthia Study 12: 10 (2004).

Haworthia odetteae Breuer, Avonia 21: 51 (2003).

Haworthia odetteae var. odyssei (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016), not validly publ.

Haworthia odyssei M.Hayashi, Haworthia Study 14: 13 (2005), herbarium where type conserved not specified.

Haworthia ohkuwae M.Hayashi, Haworthia Study 16: 13 (2006).

Haworthia olivacea (G.G.Sm.) Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia olivettiana Parr, Bull. African Succ. Pl. Soc. 6: 195 (1971).

Haworthia opalina M.Hayashi, Haworthiad 15: 17 (2001).

Haworthia otzenii G.G.Sm., J. S. African Bot. 11: 72 (1945).

Haworthia outeniquensis M.B.Bayer, Haworthia Revisited: 130 (1999).

Haworthia pallens Breuer & M.Hayashi, Alsterworthia Int., Spec. Issue 7: 7 (2004).

Haworthia pallida Haw., Saxifrag. Enum. 2: 56 (1821).

Haworthia pallida var. flaccida (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia pallida var. paynei (Poelln.) Poelln., Cact. J. (Croydon) 6: 19 (1937).

Haworthia pallidifolia (G.G.Sm.) M.Hayashi, Haworthia Study 22: 11 (2010).

Haworthia papillaris Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia papillosa Haw., Suppl. Pl. Succ.: 58 (1819).

Haworthia papillosa var. semipapillosa Haw., Saxifrag. Enum. 2: 55 (1821).

Haworthia paradoxa Poelln., Repert. Spec. Nov. Regni Veg. 33: 240 (1933).

Haworthia paradoxa var. jakubii (Breuer) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia parksiana Poelln., Repert. Spec. Nov. Regni Veg. 41: 205 (1937).

Haworthia parksiana var. dentata (M.B.Bayer) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia parva Haw., Philos. Mag. J. 66: 301 (1824).

Haworthia paucifolia (G.G.Sm.) M.Hayashi, Haworthia Study 22: 11 (2010).

Haworthia paynei Poelln., Repert. Spec. Nov. Regni Veg. 41: 206 (1937).

Haworthia peacockii Baker, J. Linn. Soc., Bot. 18: 202 (1880).

Haworthia pearsonii C.H.Wright, Bull. Misc. Inform. Kew 1907: 365 (1907).

Haworthia pectinis M.Hayashi, Haworthia Study 10: 13 (2003).

Haworthia pehlemanniae C.L.Scott, Cact. Succ. J. (Los Angeles) 54: 70 (1982).

Haworthia pehlemanniae var. albispina (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia pellucens Haw., Syn. Pl. Succ.: 96 (1812).

Haworthia pellucens var. delicatula A.Berger in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 114 (1908).

Haworthia pellucida M.Hayashi, Haworthia Study 14: 12 (2005), herbarium where type conserved not specified.

Haworthia pentagona (Haw.) Haw., Syn. Pl. Succ.: 97 (1812).

Haworthia pentagona var. spiralis (Willd.) Parr, Bull. African Succ. Pl. Soc. 6: 196 (1971).

Haworthia pentagona var. spirella (Haw.) Parr, Bull. African Succ. Pl. Soc. 6: 196 (1971).

Haworthia pentagona var. torulosa (Haw.) Parr, Bull. African Succ. Pl. Soc. 6: 196 (1971).

Haworthia perplexa Poelln., Kakteenkunde 1938: 67 (1938).

Haworthia petrophila (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia picta Poelln., Repert. Spec. Nov. Regni Veg. 44: 133 (1938).

Haworthia picta var. comptoniana (G.G.Sm.) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia picta var. janvlokii Breuer, Avonia 21: 52 (2003).

Haworthia picta var. tricolor Breuer, Avonia 21: 53 (2003).

Haworthia picturata (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia picturata var. pusilla (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia pilifera Baker, Refug. Bot. 4: t. 234 (1870).

Haworthia pilifera f. acuminata Poelln., Repert. Spec. Nov. Regni Veg. 49: 27 (1940).

Haworthia pilifera var. columnaris (Baker) Poelln., Repert. Spec. Nov. Regni Veg. 44: 236 (1938).

Haworthia pilifera var. dielsiana (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 49: 27 (1940).

Haworthia pilifera var. gordoniana (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 44: 237 (1938).

Haworthia pilifera var. salina (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 44: 237 (1938).

Haworthia pilifera var. stayneri (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 44: 237 (1938).

Haworthia pilosa M.Hayashi, Haworthia Study 12: 7 (2004).

Haworthia pilosa var. ciliata (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016), not validly publ.

Haworthia pilosa var. lachnosa (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia planifolia Haw., Philos. Mag. J. 67: 282 (1825).

Haworthia planifolia f. agavoides Triebner & Poelln., Repert. Spec. Nov. Regni Veg. 45: 162 (1938).

Haworthia planifolia f. alta Triebner & Poelln., Repert. Spec. Nov. Regni Veg. 45: 162 (1938).

Haworthia planifolia f. calochlora Triebner & Poelln., Repert. Spec. Nov. Regni Veg. 45: 163 (1938).

Haworthia planifolia var. exulata Poelln., Repert. Spec. Nov. Regni Veg. 43: 93 (1938).

Haworthia planifolia var. incrassata Poelln., Repert. Spec. Nov. Regni Veg. 45: 163 (1938).

Haworthia planifolia var. longifolia Poelln., Repert. Spec. Nov. Regni Veg. 45: 163 (1938).

Haworthia planifolia f. olivacea Triebner & Poelln., Repert. Spec. Nov. Regni Veg. 45: 162 (1938).

Haworthia planifolia var. poellnitziana Resende, Repert. Spec. Nov. Regni Veg. 48: 113 (1940).

Haworthia planifolia f. robusta Triebner & Poelln., Repert. Spec. Nov. Regni Veg. 45: 162 (1938).

Haworthia planifolia var. setulifera Poelln., Kakteenkunde 5: 54 (1938).

Haworthia planifolia var. sublaevis Poelln., Kakteenkunde 6: 67 (1938).

Haworthia planifolia var. transiens Poelln., Repert. Spec. Nov. Regni Veg. 45: 163 (1938).

Haworthia poellnitziana Uitewaal, Cact. & Vetpl. 5: 137 (1939).

Haworthia polyphylla Baker, J. Linn. Soc., Bot. 18: 213 (1880).

Haworthia pringlei C.L.Scott, Bradleya 12: 103 (1994).

Haworthia pringlei var. hastata (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia pseudogranulata Poelln., Repert. Spec. Nov. Regni Veg. 41: 208 (1937).

Haworthia × pseudorigida (Salm-Dyck) Haw., Suppl. Pl. Succ.: 62 (1819).

Haworthia pseudotessellata Poelln., Repert. Spec. Nov. Regni Veg. 27: 133 (1929).

Haworthia pseudotortuosa Haw., Suppl. Pl. Succ.: 59 (1819).

Haworthia pubescens M.B.Bayer, J. S. African Bot. 38: 129 (1972).

Haworthia pubescens var. livida M.B.Bayer, Haworthia Revisited: 134 (1999).

Haworthia pulchella M.B.Bayer, J. S. African Bot. 39: 252 (1973).

Haworthia pulchella var. globifera M.B.Bayer, Haworthia Revisited: 136 (1999).

Haworthia pulchella var. pulchella.

Haworthia pumila (L.) Duval, Pl. Succ. Horto Alencon.: 7 (1809).

Haworthia pumila subsp. attenuata (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 36 (1997).

Haworthia pumila subsp. fasciata (Willd.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 37 (1997).

Haworthia pumila var. kingiana (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 36 (1997).

Haworthia pumila subsp. longiana (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 37 (1997).

Haworthia pumila subsp. minima (Aiton) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 36 (1997).

Haworthia pumila subsp. radula (Jacq.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 37 (1997).

Haworthia pumila var. smitii (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 36 (1997).

Haworthia pungens M.B.Bayer, Haworthia Revisited: 188 (1999).

Haworthia pusilla M.Hayashi, Haworthia Study 12: 10 (2004).

Haworthia pygmaea Poelln., Repert. Spec. Nov. Regni Veg. 27: 132 (1929).

Haworthia pygmaea var. acuminata (M.B.Bayer) M.B.Bayer, Haworthia Update 7(4): 36 (2012).

Haworthia pygmaea var. argenteomaculosa (G.G.Sm.) M.B.Bayer, Aloe 34: 6 (1997).

Haworthia pygmaea f. crystallina Pilbeam, Haworthia & Astroloba: 107 (1983), exact type not cited.

Haworthia pygmaea var. dekenahii (G.G.Sm.) M.B.Bayer, Haworthia Update 7(4): 36 (2012).

Haworthia pygmaea var. esterhuizenii (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia pygmaea var. fusca (Breuer) M.B.Bayer, Haworthia Update 7(4): 36 (2012).

Haworthia pygmaea var. pygmaea.

Haworthia pygmaea var. vincentii (Breuer) M.B.Bayer, Haworthia Update 7(4): 36 (2012).

Haworthia radula (Jacq.) Haw., Syn. Pl. Succ.: 93 (1812).

Haworthia radula var. asperior Haw., Saxifrag. Enum. 2: 54 (1821), nom. superfl.

Haworthia radula var. laevior Haw., Saxifrag. Enum. 2: 54 (1821).

Haworthia radula var. magniperlata Haw., Saxifrag. Enum. 2: 54 (1821).

Haworthia radula var. pluriperlata Haw., Saxifrag. Enum. 2: 54 (1821), nom. superfl.

Haworthia ramifera Haw., Saxifrag. Enum. 2: 52 (1821).

Haworthia ramosa G.G.Sm., J. S. African Bot. 10: 22 (1944).

Haworthia rava M.Hayashi, Haworthia Study 14: 11 (2005), herbarium where type conserved not specified.

Haworthia recurva (Willd.) Haw., Syn. Pl. Succ.: 94 (1812).

Haworthia reddii C.L.Scott, Cact. Succ. J. (Los Angeles) 66: 182 (1994).

Haworthia regalis M.Hayashi, Haworthia Study 10: 13 (2003).

Haworthia regina M.Hayashi, Haworthia Study 10: 14 (2003).

Haworthia reinwardtii (Salm-Dyck) Haw., Saxifrag. Enum. 2: 53 (1821).

Haworthia reinwardtii var. adelaidensis Poelln., Beitr. Sukkulentenk. Sukkulentenpflege 2: 43 (1940).

Haworthia reinwardtii var. archibaldiae Poelln., Repert. Spec. Nov. Regni Veg. 41: 210 (1937).

Haworthia reinwardtii var. bellula G.G.Sm., J. S. African Bot. 11: 70 (1945).

Haworthia reinwardtii var. brevicula G.G.Sm., J. S. African Bot. 10: 11 (1944).

Haworthia reinwardtii var. chalumnensis G.G.Sm., J. S. African Bot. 9: 99 (1943).

Haworthia reinwardtii f. chalumnensis (G.G.Sm.) M.B.Bayer, Haworthia Handb.: 106 (1976).

Haworthia reinwardtii var. chalwinii (Marloth & A.Berger) Resende, Mem. Soc. Brot. 2: 80 (1943).

Haworthia reinwardtii var. coarctata (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 40 (1997).

Haworthia reinwardtii subsp. coarctata (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 40 (1997).

Haworthia reinwardtii var. committeesensis G.G.Sm., J. S. African Bot. 9: 93 (1943).

Haworthia reinwardtii var. conspicua Poelln., Repert. Spec. Nov. Regni Veg. 41: 210 (1937).

Haworthia reinwardtii var. diminuta G.G.Sm., J. S. African Bot. 14: 52 (1948).

Haworthia reinwardtii var. fallax (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 41: 209 (1937).

Haworthia reinwardtii subsp. glauca (Baker) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 41 (1997).

Haworthia reinwardtii var. glauca (Baker) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 41 (1997).

Haworthia reinwardtii var. grandicula G.G.Sm., J. S. African Bot. 10: 12 (1944).

Haworthia reinwardtii var. greenii (Baker) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 41 (1997).

Haworthia reinwardtii var. haworthii Resende, Mem. Soc. Brot. 2: 79 (1943).

Haworthia reinwardtii var. herrei (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 41 (1997).

Haworthia reinwardtii var. huntsdriftensis G.G.Sm., J. S. African Bot. 10: 14 (1944).

Haworthia reinwardtii var. kaffirdriftensis G.G.Sm., J. S. African Bot. 9: 96 (1941).

Haworthia reinwardtii f. kaffirdriftensis (G.G.Sm.) M.B.Bayer, Haworthia Handb.: 126 (1976).

Haworthia reinwardtii var. major Baker, J. Linn. Soc., Bot. 18: 202 (1880).

Haworthia reinwardtii var. minor Baker, J. Linn. Soc., Bot. 18: 202 (1880).

Haworthia reinwardtii var. olivacea G.G.Sm., J. S. African Bot. 10: 142 (1944).

Haworthia reinwardtii f. olivacea (G.G.Sm.) M.B.Bayer, Haworthia Handb.: 142 (1976).

Haworthia reinwardtii var. peddiensis G.G.Sm., J. S. African Bot. 9: 94 (1943).

Haworthia reinwardtii var. pseudocoarctata Poelln., Beitr. Sukkulentenk. Sukkulentenpflege 2: 43 (1940).

Haworthia reinwardtii var. pulchra Poelln., Repert. Spec. Nov. Regni Veg. 41: 209 (1937).

Haworthia reinwardtii var. riebeekensis G.G.Sm., J. S. African Bot. 10: 16 (1944).

Haworthia reinwardtii var. tenuis G.G.Sm., J. S. African Bot. 14: 51 (1948).

Haworthia reinwardtii var. triebneri Resende, Mem. Soc. Brot. 2: 80 (1943).

Haworthia reinwardtii var. valida G.G.Sm., J. S. African Bot. 9: 98 (1943).

Haworthia reinwardtii var. zebrina G.G.Sm., J. S. African Bot. 10: 18 (1944).

Haworthia reinwardtii f. zebrina (G.G.Sm.) M.B.Bayer, Natl. Cact. Succ. J. 32: 18 (1977).

Haworthia resendeana Poelln., Desert Pl. Life 10: 225 (1938).

Haworthia reticulata (Haw.) Haw., Syn. Pl. Succ.: 94 (1812).

Haworthia reticulata var. acuminata Poelln., Repert. Spec. Nov. Regni Veg. 43: 93 (1938).

Haworthia reticulata var. attenuata M.B.Bayer, Haworthia Revisited: 140 (1999).

Haworthia reticulata subsp. batesiana (Uitewaal) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 47 (1997).

Haworthia reticulata var. hurlingii (Poelln.) M.B.Bayer, New Haworthia Handb.: 52 (1982).

Haworthia reticulata var. integra (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 47 (1997).

Haworthia reticulata var. reticulata.

Haworthia reticulata var. subregularis (Baker) M.B.Bayer, Haworthia Revisited: 141 (1999).

Haworthia retusa (L.) Duval, Pl. Succ. Horto Alencon.: 7 (1809).

Haworthia retusa var. acuminata (M.B.Bayer) M.B.Bayer, New Haworthia Handb.: 53 (1982).

Haworthia retusa f. acuminata M.B.Bayer, Haworthia Handb.: 94 (1976).

Haworthia retusa f. argenteomaculosa (G.G.Sm.) M.B.Bayer, Haworthia Handb.: 98 (1976).

Haworthia retusa subsp. asperula (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 50 (1997).

Haworthia retusa var. asperula (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 50 (1997).

Haworthia retusa var. bruynsii (M.B.Bayer) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 49 (1997).

Haworthia retusa var. comptoniana (G.G.Sm.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 50 (1997).

Haworthia retusa var. dekenahii (G.G.Sm.) M.B.Bayer, New Haworthia Handb.: 53 (1982).

Haworthia retusa var. densiflora G.G.Sm., J. S. African Bot. 12: 7 (1946).

Haworthia retusa subsp. emelyae (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 49 (1997).

Haworthia retusa var. emelyae (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 49 (1997).

Haworthia retusa var. fouchei (Poelln.) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia retusa f. fouchei (Poelln.) Pilbeam, Haworthia & Astroloba: 119 (1983).

Haworthia retusa var. fusca (Breuer) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia retusa f. geraldii (C.L.Scott) Pilbeam, Haworthia & Astroloba: 119 (1983).

Haworthia retusa var. heidelbergensis (G.G.Sm.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 49 (1997).

Haworthia retusa f. longibracteata (G.G.Sm.) Pilbeam, Haworthia & Astroloba: 119 (1983).

Haworthia retusa var. longibracteata (G.G.Sm.) M.B.Bayer, Haworthia Update 7(4): 36 (2012).

Haworthia retusa var. magnifica (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 50 (1997).

Haworthia retusa var. mirabilis (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 50 (1997).

Haworthia retusa var. multilineata G.G.Sm., J. S. African Bot. 12: 3 (1946).

Haworthia retusa f. multilineata (G.G.Sm.) Pilbeam, Haworthia & Astroloba: 119 (1983).

Haworthia retusa var. mutica (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 49 (1997).

Haworthia retusa var. nigra (M.B.Bayer) M.B.Bayer, Haworthia Update 7(4): 36 (2012).

Haworthia retusa var. quimutica M.Hayashi, Haworthiad 15: 17 (2001).

Haworthia retusa var. retusa.

Haworthia retusa var. solitaria G.G.Sm., J. S. African Bot. 12: 5 (1946).

Haworthia retusa var. springbokvlakensis (C.L.Scott) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 50 (1997).

Haworthia retusa var. suberecta (Poelln.) M.B.Bayer, Haworthia Update 7(4): 36 (2012).

Haworthia retusa var. turgida (Haw.) M.B.Bayer, Haworthia Update 7(4): 36 (2012).

Haworthia × revendettii Uitewaal, Cact. & Vetpl. 6: 44 (1940).

Haworthia × rigida (Lam.) Haw., Saxifrag. Enum. 2: 49 (1821).

Haworthia × rigida var. expansa (Haw.) Baker, J. Linn. Soc., Bot. 18: 203 (1880).

Haworthia rooivleiensis Breuer, Gen. Haworthia 1: 7 (2010).

Haworthia rossouwii Poelln., Kakteenkunde 1938: 75 (1938).

Haworthia rossouwii var. calcarea (M.B.Bayer) M.B.Bayer, Aloe 38: 36 (2001).

Haworthia rossouwii var. minor (M.B.Bayer) M.B.Bayer, Haworthia Update 7(4): 36 (2012).

Haworthia rossouwii var. petrophila (M.B.Bayer) M.B.Bayer, Aloe 38: 36 (2001).

Haworthia rossouwii var. rossouwii.

Haworthia rossouwii var. scabra (M.B.Bayer) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia rossouwii var. serrata (M.B.Bayer) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia royalis M.Hayashi, Haworthia Study 14: 13 (2005), herbarium where type conserved not specified.

Haworthia rubriflora (L.Bolus) Parr, Bull. African Succ. Pl. Soc. 6: 196 (1971).

Haworthia × rubrobrunnea Poelln., Repert. Spec. Nov. Regni Veg. 49: 57 (1940).

Haworthia rugosa (Salm-Dyck) Baker, J. Linn. Soc., Bot. 18: 206 (1880).

Haworthia rugosa var. perviridis (Salm-Dyck) A.Berger in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 92 (1908).

Haworthia rycroftiana M.B.Bayer, J. S. African Bot. 47: 795 (1981).

Haworthia ryderiana Poelln., Desert Pl. Life 9: 103 (1937).

Haworthia ryneveldii Poelln., Repert. Spec. Nov. Regni Veg. 46: 271 (1939).

Haworthia sakaii M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia salina (Poelln.) M.Hayashi, Haworthia Study 22: 11 (2010).

Haworthia salina var. venusta (C.L.Scott) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia × sampaiana (Resende) Resende, Bol. Soc. Brot., sér. 2, 14: 192 (1940).

Haworthia sampaiana f. broteroana (Resende) Resende in F.P.de Resende & J.Pinto-Lopes, Succ. Afric. 4: 178 (1946).

Haworthia sapphaia M.Hayashi, Haworthia Study 17: 16 (2007).

Haworthia scabra Haw., Suppl. Pl. Succ.: 58 (1819).

Haworthia scabra subsp. granulata (Marloth) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 35 (1997).

Haworthia scabra var. johanii M.Hayashi, Haworthiad 15: 16 (2001).

Haworthia scabra var. lateganiae (Poelln.) M.B.Bayer, Haworthia Revisited: 195 (1999).

Haworthia scabra var. lavrani (C.L.Scott) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 35 (1997).

Haworthia scabra var. morrisiae (Poelln.) M.B.Bayer, Haworthia Handb.: 137 (1976).

Haworthia scabra subsp. sordida (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 34 (1997).

Haworthia scabra var. sordida (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 34 (1997).

Haworthia scabra subsp. starkiana (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 35 (1997).

Haworthia scabra var. starkiana (Poelln.) M.B.Bayer, Haworthia Revisited: 197 (1999).

Haworthia scabra var. tuberculata (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 35 (1997).

Haworthia scabrida Breuer, Gen. Haworthia 1: 8 (2010).

Haworthia scabrispina (M.B.Bayer) Breuer, Gen. Haworthia 1: 8 (2010).

Haworthia schmidtiana Poelln., Repert. Spec. Nov. Regni Veg. 26: 23 (1929).

Haworthia schmidtiana var. angustata Poelln., Kakteenk. & Kakteenfr. 10: 169 (1937).

Haworthia schmidtiana var. diversifolia (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 44: 240 (1938).

Haworthia schmidtiana var. elongata Poelln., Repert. Spec. Nov. Regni Veg. 44: 240 (1938).

Haworthia schmidtiana f. nana Poelln., Repert. Spec. Nov. Regni Veg. 44: 240 (1938).

Haworthia schmidtiana var. pusilla Poelln., Repert. Spec. Nov. Regni Veg. 44: 240 (1938).

Haworthia schmidtiana var. suberecta Poelln., Kakteenk. & Kakteenfr. 10: 169 (1937).

Haworthia schoemanii M.Hayashi, Haworthia Study 9: 14 (2003).

Haworthia schuldtiana Poelln., Repert. Spec. Nov. Regni Veg. 41: 211 (1937).

Haworthia schuldtiana var. erecta Triebner & Poelln., Repert. Spec. Nov. Regni Veg. 49: 25 (1940).

Haworthia schuldtiana var. maculata Poelln., Repert. Spec. Nov. Regni Veg. 49: 25 (1940).

Haworthia schuldtiana var. major G.G.Sm., J. S. African Bot. 12: 1 (1946).

Haworthia schuldtiana var. minor Triebner & Poelln., Repert. Spec. Nov. Regni Veg. 49: 25 (1940).

Haworthia schuldtiana var. robertsonensis Poelln., Repert. Spec. Nov. Regni Veg. 49: 25 (1940).

Haworthia schuldtiana var. simplicior Poelln., Repert. Spec. Nov. Regni Veg. 49: 26 (1940).

Haworthia schuldtiana var. sublaevis Poelln., Repert. Spec. Nov. Regni Veg. 49: 26 (1940).

Haworthia schuldtiana var. subtuberculata Poelln., Repert. Spec. Nov. Regni Veg. 49: 26 (1940).

Haworthia schuldtiana var. unilineata Poelln., Repert. Spec. Nov. Regni Veg. 49: 26 (1940).

Haworthia schuldtiana var. whitesloaneana (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 49: 26 (1940).

Haworthia scottii Breuer, Avonia 21: 55 (2003).

Haworthia semiglabrata Haw., Suppl. Pl. Succ.: 55 (1819).

Haworthia semimargaritifera (Salm-Dyck) Haw., Suppl. Pl. Succ.: 53 (1819).

Haworthia semimargaritifera var. major (Salm-Dyck) Haw., Suppl. Pl. Succ.: 54 (1819).

Haworthia semimargaritifera var. maxima (Haw.) Haw., Suppl. Pl. Succ.: 54 (1819).

Haworthia semimargaritifera var. multiperla Haw., Suppl. Pl. Succ.: 54 (1819).

Haworthia semiviva (Poelln.) M.B.Bayer, Haworthia Handb.: 153 (1976).

Haworthia serrata M.B.Bayer, J. S. African Bot. 39: 249 (1973).

Haworthia sessiliflora Baker in W.H.Harvey & auct. suc. (eds.), Fl. Cap. 6: 353 (1896).

Haworthia setata Haw., Suppl. Pl. Succ.: 52 (1819).

Haworthia setata var. bijliana (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 44: 224 (1938).

Haworthia setata var. gigas (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 44: 224 (1938).

Haworthia setata subvar. joubertii (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 44: 224 (1938).

Haworthia setata var. major Haw., Saxifrag. Enum. 2: 56 (1821).

Haworthia setata var. media Haw., Saxifrag. Enum. 2: 56 (1821).

Haworthia setata var. nigricans Haw., Saxifrag. Enum. 2: 56 (1821).

Haworthia setata var. subinermis Poelln., Repert. Spec. Nov. Regni Veg. 40: 150 (1936).

Haworthia setata var. xiphiophylla (Baker) Poelln., Repert. Spec. Nov. Regni Veg. 44: 225 (1938).

Haworthia setulifera (Poelln.) Breuer, Gen. Haworthia 1: 8 (2010).

Haworthia shieldsiana Parr, Bull. African Succ. Pl. Soc. 6: 196 (1971).

Haworthia silviae M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia silviae var. nigra (M.B.Bayer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia × skinneri (A.Berger) Resende, Mem. Soc. Brot. 2: 77 (1943).

Haworthia smitii Poelln., Desert Pl. Life 10: 186 (1938).

Haworthia solitaria (G.G.Sm.) C.L.Scott, Aloe 11: 37 (1973).

Haworthia sordida Haw., Saxifrag. Enum. 2: 51 (1821).

Haworthia sordida var. agavoides (Zantner & Poelln.) G.G.Sm., J. S. African Bot. 16: 2 (1950).

Haworthia sordida var. lavrani C.L.Scott, Cact. Succ. J. (Los Angeles) 53: 124 (1981).

Haworthia sparsa M.Hayashi, Haworthia Study 16: 13 (2006).

Haworthia specksii Breuer, Alsterworthia Int., Spec. Issue 7: 8 (2004).

Haworthia spiralis (L.) Duval, Pl. Succ. Horto Alencon.: 7 (1809).

Haworthia spirella Haw., Syn. Pl. Succ.: 97 (1812).

Haworthia splendens (J.D.Venter & S.A.Hammer) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia splendens var. hansii M.Hayashi, Haworthia Study 24: 3 (2010).

Haworthia splendens var. ingoi M.Hayashi, Haworthia Study 24: 3 (2010).

Haworthia splendens var. masai M.Hayashi, Haworthia Study 24: 3 (2010).

Haworthia springbokvlakensis C.L.Scott, J. S. African Bot. 36: 288 (1970).

Haworthia standeri (Esterhuizen) M.Hayashi, Haworthia Study 22: 11 (2010).

Haworthia starkiana Poelln., Repert. Spec. Nov. Regni Veg. 33: 73 (1933).

Haworthia starkiana var. lateganiae (Poelln.) M.B.Bayer, Haworthia Handb.: 128 (1976).

Haworthia stayneri Poelln., Repert. Spec. Nov. Regni Veg. 42: 270 (1937).

Haworthia stayneri var. salina Poelln., Repert. Spec. Nov. Regni Veg. 42: 271 (1937).

Haworthia stenophylla Baker, Hooker's Icon. Pl. 20: t. 1074 (1891).

Haworthia stiemiei Poelln., Repert. Spec. Nov. Regni Veg. 44: 227 (1938).

Haworthia subattenuata (Salm-Dyck ex Schult. & Schult.f.) Baker, J. Linn. Soc., Bot. 18: 205 (1880).

Haworthia suberecta (Poelln.) Breuer, Gen. Haworthia 1: 8 (2010).

Haworthia suberecta var. pallidifolia (G.G.Sm.) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia subfasciata (Salm-Dyck ex Schult. & Schult.f.) Baker, J. Linn. Soc., Bot. 18: 204 (1880).

Haworthia subfasciata var. kingiana (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 44: 218 (1938).

Haworthia subglauca (Poelln.) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia subhamata M.Hayashi, Haworthia Study 12: 11 (2004).

Haworthia sublimpidula Poelln., Repert. Spec. Nov. Regni Veg. 41: 212 (1937).

Haworthia sublineata (Poelln.) Breuer, Gen. Haworthia 1: 8 (2010).

Haworthia submaculata Poelln., Desert Pl. Life 11: 194 (1939).

Haworthia subregularis Baker, Refug. Bot. 4: t. 232 (1870).

Haworthia × subrigida Baker, J. Linn. Soc., Bot. 18: 201 (1880), nom. superfl.

Haworthia subspicata Baker, Bull. Herb. Boissier, sér. 2, 4: 998 (1904).

Haworthia subtortuosa Sweet, Hort. Brit., ed. 2: 520 (1830).

Haworthia subularis M.Hayashi, Haworthia Study 10: 12 (2003).

Haworthia subulata (Salm-Dyck) Baker, J. Linn. Soc., Bot. 18: 206 (1880).

Haworthia succinea M.Hayashi, Haworthia Study 10: 14 (2003).

Haworthia tarkasia M.Hayashi, Haworthia Study 15: 14 (2006).

Haworthia × tauteae Archibald, Fl. Pl. Africa 25: t. 992 (1946).

Haworthia tenera Poelln., Repert. Spec. Nov. Regni Veg. 31: 86 (1932).

Haworthia tenera var. confusa (Poelln.) Uitewaal, Succulenta (Netherlands) 29: 52 (1948).

Haworthia tenera var. cummingii (Breuer & M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia tenera var. doldii (M.B.Bayer) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia tenera var. major (Poelln.) Uitewaal, Succulenta (Netherlands) 1948: 52 (1948).

Haworthia tenuifolia Engl., Bot. Jahrb. Syst. 10: 2 (1888).

Haworthia tenuis (G.G.Sm.) Breuer, Gen. Haworthia 1: 8 (2010).

Haworthia teres M.Hayashi, Haworthia Study 12: 7 (2004).

Haworthia tessellata Haw., Philos. Mag. J. 66: 300 (1824).

Haworthia tessellata f. brevior Resende & Poelln., Brotéria, Ci. Nat. 11: 54 (1942).

Haworthia tessellata var. coriacea Resende & Poelln., Brotéria, Ci. Nat. 11: 52 (1942).

Haworthia tessellata var. elongata Woerden, Succulenta (Netherlands) 22(4): 37 (1940).

Haworthia tessellata var. engleri (Dinter) Poelln., Repert. Spec. Nov. Regni Veg. 44: 202 (1938).

Haworthia tessellata var. inflexa Baker, J. Linn. Soc., Bot. 18: 211 (1880).

Haworthia tessellata f. longior Resende & Poelln., Brotéria, Ci. Nat. 11: 52 (1942).

Haworthia tessellata var. luisieri Resende & Poelln., Brotéria, Ci. Nat. 11: 51 (1942).

Haworthia tessellata f. major J.R.Br., Cact. Succ. J. (Los Angeles) 19: 12 (1947).

Haworthia tessellata var. minutissima (Poelln.) Viveiros, Portugaliae Acta Biol., Sér. A, Morfol., R. B. Goldschmidt: 207 (1949 publ. 1951).

Haworthia tessellata var. obesa Resende & Poelln., Brotéria, Ci. Nat. 11: 54 (1942).

Haworthia tessellata var. palhinhiae Resende & Poelln., Brotéria, Ci. Nat. 11: 51 (1942).

Haworthia tessellata var. parva (Haw.) Baker, J. Linn. Soc., Bot. 18: 211 (1880).

Haworthia tessellata var. simplex Resende & Poelln., Brotéria, Ci. Nat. 11: 49 (1942).

Haworthia tessellata var. stephaneana Resende & Poelln., Brotéria, Ci. Nat. 11: 50 (1942).

Haworthia tessellata var. tuberculata Poelln., Cact. J. (Croydon) 5: 33 (1936).

Haworthia tessellata var. velutina Resende & Poelln., Brotéria, Ci. Nat. 11: 52 (1942).

Haworthia tisleyi Baker, J. Linn. Soc., Bot. 18: 208 (1880).

Haworthia toonensis (M.B.Bayer) Breuer, Gen. Haworthia 1: 8 (2010).

Haworthia torquata Haw., Philos. Mag. Ann. Chem. 1: 123 (1826 publ. 1827).

Haworthia × tortella Haw., Suppl. Pl. Succ.: 61 (1819).

Haworthia × tortuosa (Haw.) Haw., Syn. Pl. Succ.: 90 (1812).

Haworthia tortuosa var. curta (Haw.) Baker in W.H.Harvey & auct. suc. (eds.), Fl. Cap. 6: 336 (1896).

Haworthia tortuosa var. major (Salm-Dyck) A.Berger in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 80 (1908).

Haworthia tortuosa var. pseudorigida (Salm-Dyck) A.Berger in H.G.A.Engler (ed.), Pflanzenr., IV, 38: 79 (1908).

Haworthia tortuosa var. tortella (Haw.) Baker in W.H.Harvey & auct. suc. (eds.), Fl. Cap. 6: 336 (1896).

Haworthia tradouwensis Breuer, Avonia 21: 57 (2003).

Haworthia transiens (Poelln.) M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia transiens var. florens (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia translucens (Willd.) Haw., Suppl. Pl. Succ.: 52 (1819).

Haworthia translucens var. delicatula (A.Berger) Poelln., Repert. Spec. Nov. Regni Veg. 44: 226 (1938).

Haworthia translucens subsp. tenera (Poelln.) M.B.Bayer, Haworthia Handb.: 161 (1976).

Haworthia tretyrensis Breuer, Avonia 21: 58 (2003).

Haworthia tretyrensis var. pectinis (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia tricolor (Breuer) M.Hayashi, Haworthia Study 22: 11 (2010).

Haworthia triebneriana Poelln., Repert. Spec. Nov. Regni Veg. 41: 214 (1937).

Haworthia triebneriana var. depauperata Poelln., Repert. Spec. Nov. Regni Veg. 43: 94 (1938).

Haworthia triebneriana var. diversicolor Triebner & Poelln., Repert. Spec. Nov. Regni Veg. 47: 9 (1939).

Haworthia triebneriana var. lanceolata Triebner, Repert. Spec. Nov. Regni Veg. 47: 10 (1940).

Haworthia triebneriana var. multituberculata Poelln., Repert. Spec. Nov. Regni Veg. 47: 10 (1939).

Haworthia triebneriana var. napierensis Triebner & Poelln., Repert. Spec. Nov. Regni Veg. 47: 10 (1939).

Haworthia triebneriana var. nitida Poelln., Repert. Spec. Nov. Regni Veg. 49: 28 (1940).

Haworthia triebneriana var. pulchra Poelln., Repert. Spec. Nov. Regni Veg. 49: 29 (1940).

Haworthia triebneriana var. rubrodentata Triebner & Poelln., Repert. Spec. Nov. Regni Veg. 47: 10 (1939).

Haworthia triebneriana var. sublineata Poelln., Repert. Spec. Nov. Regni Veg. 44: 135 (1938).

Haworthia triebneriana var. subtuberculata Poelln., Repert. Spec. Nov. Regni Veg. 47: 10 (1939).

Haworthia triebneriana var. turgida Triebner, Repert. Spec. Nov. Regni Veg. 47: 11 (1939).

Haworthia truncata Schönland, Trans. Roy. Soc. South Africa 1: 391 (1910).

Haworthia truncata f. crassa Poelln., Repert. Spec. Nov. Regni Veg. 44: 239 (1938).

Haworthia truncata var. maughanii (Poelln.) B.Fearn, Natl. Cact. Succ. J. 21: 28 (1966).

Haworthia truncata var. minor Breuer, Avonia 21: 59 (2003).

Haworthia truncata f. normalis Poelln., Repert. Spec. Nov. Regni Veg. 44: 239 (1938), not validly publ.

Haworthia truncata var. tenuis (Poelln.) M.B.Bayer, Haworthia Handb.: 161 (1976).

Haworthia truncata f. tenuis Poelln., Repert. Spec. Nov. Regni Veg. 44: 239 (1938).

Haworthia truncata var. truncata.

Haworthia truterorum Breuer & Marx, Aloe 48: 54 (2011).

Haworthia tuberculata Poelln., Repert. Spec. Nov. Regni Veg. 29: 219 (1931).

Haworthia tuberculata var. acuminata Poelln., Repert. Spec. Nov. Regni Veg. 44: 219 (1938).

Haworthia tuberculata var. augustata Poelln., Repert. Spec. Nov. Regni Veg. 49: 27 (1940).

Haworthia tuberculata var. subexpansa Poelln., Cact. J. (Croydon) 7: 56 (1938).

Haworthia tuberculata var. sublaevis Poelln., Repert. Spec. Nov. Regni Veg. 44: 219 (1938).

Haworthia turgida Haw., Suppl. Pl. Succ.: 22 (1819).

Haworthia turgida f. caespitosa (Poelln.) Pilbeam, Haworthia & Astroloba: 133 (1983).

Haworthia turgida var. longibracteata (G.G.Sm.) M.B.Bayer, Haworthia Revisited: 154 (1999).

Haworthia turgida f. pallidifolia (G.G.Sm.) Pilbeam, Haworthia & Astroloba: 133 (1983).

Haworthia turgida var. pallidifolia G.G.Sm., J. S. African Bot. 12: 44 (1946).

Haworthia turgida var. suberecta Poelln., Repert. Spec. Nov. Regni Veg. 44: 134 (1938).

Haworthia turgida f. suberecta (Poelln.) Pilbeam, Haworthia & Astroloba: 133 (1983).

Haworthia turgida var. subtuberculata Poelln., Repert. Spec. Nov. Regni Veg. 44: 134 (1938).

Haworthia turgida var. turgida.

Haworthia ubomboensis I.Verd., Fl. Pl. South Africa 21: t. 818 (1941).

Haworthia uitewaaliana Poelln., Cact. & Vetpl. 5: 115 (1939).

Haworthia umbraticola Poelln., Kakteenkunde 1937: 134 (1937).

Haworthia umbraticola var. hilliana (Poelln.) Poelln., Repert. Spec. Nov. Regni Veg. 44: 234 (1938).

Haworthia umbraticola var. obesa (Poelln.) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia unicolor Poelln., Kakteenkunde 1937: 154 (1937).

Haworthia unicolor var. helmiae (Poelln.) M.B.Bayer, Haworthia Handb.: 121 (1976).

Haworthia unicolor var. venteri (Poelln.) M.B.Bayer, Haworthia Handb.: 166 (1976).

Haworthia variabilis (Breuer) Breuer, Gen. Haworthia 1: 8 (2010).

Haworthia variegata L.Bolus, J. Bot. 67: 137 (1929).

Haworthia variegata var. hemicrypta M.B.Bayer, Haworthia Revisited: 158 (1999).

Haworthia variegata var. modesta M.B.Bayer, Haworthia Revisited: 159 (1999).

Haworthia variegata var. petrophila M.B.Bayer, Haworthia Revisited: 159 (1999).

Haworthia variegata var. variegata.

Haworthia veltina M.Hayashi, Haworthia Study 12: 11 (2004).

Haworthia venetia M.Hayashi, Haworthia Study 12: 6 (2004).

Haworthia venetia var. calva (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia venetia var. jeffreis (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia venetia var. teres (M.Hayashi) Breuer, Alsterworthia Int. 16(2): 6 (2016).

Haworthia venosa (Lam.) Haw., Saxifrag. Enum. 2: 44 (1821).

Haworthia venosa subsp. granulata (Marloth) M.B.Bayer, Haworthia Handb.: 120 (1976).

Haworthia venosa subsp. nigra (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 39 (1997).

Haworthia venosa var. oertendahlii Hjelmq., Bot. Not. 1943: 233 (1943).

Haworthia venosa subsp. recurva (Haw.) M.B.Bayer, Haworthia Handb.: 149 (1976).

Haworthia venosa subsp. tessellata (Haw.) M.B.Bayer, New Haworthia Handb.: 76 (1982).

Haworthia venosa var. tessellata (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 39 (1997).

Haworthia venosa subsp. woolleyi (Poelln.) Halda, Acta Mus. Richnov., Sect. Nat. 4(2): 40 (1997).

Haworthia venteri Poelln., Cact. Succ. J. Gr. Brit. 8: 19 (1939).

Haworthia venusta C.L.Scott, Bradleya 14: 87 (1996).

Haworthia villosa M.Hayashi, Haworthia Study 12: 8 (2004).

Haworthia vincentii Breuer, Alsterworthia Int., Spec. Issue 7: 11 (2004).

Haworthia violacea M.Hayashi, Haworthia Study 12: 9 (2004).

Haworthia virella (M.B.Bayer) M.Hayashi, Haworthia Study 9: 12 (2003).

Haworthia virescens Haw., Saxifrag. Enum. 2: 52 (1821).

Haworthia virescens var. minor Haw., Saxifrag. Enum. 2: 53 (1821).

Haworthia viscosa (L.) Haw., Syn. Pl. Succ.: 90 (1812).

Haworthia viscosa f. asperiuscula (Haw.) Pilbeam, Haworthia & Astroloba: 141 (1983).

Haworthia viscosa f. beanii (G.G.Sm.) Pilbeam, Haworthia & Astroloba: 141 (1983).

Haworthia viscosa var. caespitosa Poelln., Repert. Spec. Nov. Regni Veg. 44: 240 (1938).

Haworthia viscosa var. concinna (Haw.) Baker, J. Linn. Soc., Bot. 18: 200 (1880).

Haworthia viscosa var. cougaensis G.G.Sm., J. S. African Bot. 11: 65 (1945).

Haworthia viscosa subsp. derekii-clarkii Halda, Acta Mus. Richnov., Sect. Nat. 5(1): 43 (1998).

Haworthia viscosa var. indurata (Haw.) Baker, J. Linn. Soc., Bot. 18: 200 (1880).

Haworthia viscosa var. major Haw., Saxifrag. Enum. 2: 49 (1821).

Haworthia viscosa var. minor Haw., Saxifrag. Enum. 2: 49 (1821).

Haworthia viscosa subsp. nigra (Haw.) Halda, Acta Mus. Richnov., Sect. Nat. 5(1): 44 (1998).

Haworthia viscosa var. parvifolia Haw., Saxifrag. Enum. 2: 49 (1821).

Haworthia viscosa var. pseudotortuosa (Salm-Dyck) Baker, J. Linn. Soc., Bot. 18: 201 (1880).

Haworthia viscosa var. quaggaensis G.G.Sm., J. S. African Bot. 14: 46 (1948).

Haworthia viscosa var. subobtusa Poelln., Repert. Spec. Nov. Regni Veg. 44: 240 (1938).

Haworthia viscosa f. subobtusa (Poelln.) Pilbeam, Haworthia & Astroloba: 141 (1983).

Haworthia viscosa var. torquata (Haw.) Baker, J. Linn. Soc., Bot. 18: 201 (1880).

Haworthia viscosa var. variabilis Breuer, Avonia 21: 61 (2003).

Haworthia viscosa var. viridissima G.G.Sm., J. S. African Bot. 11: 67 (1946).

Haworthia vitris M.Hayashi, Haworthia Study 14: 16 (2005), herbarium where type conserved not specified.

Haworthia vittata Baker, Refug. Bot. 4: t. 263 (1871).

Haworthia vlokii M.B.Bayer, Haworthia Revisited: 160 (1999).

Haworthia whitesloaneana Poelln., Desert Pl. Life 9: 102 (1937).

Haworthia willowmorensis Poelln., Repert. Spec. Nov. Regni Veg. 41: 216 (1937).

Haworthia wimii M.Hayashi, Haworthia Study 3: 13 (2000).

Haworthia wittebergensis W.F.Barker, J. S. African Bot. 8: 245 (1942).

Haworthia woolleyi Poelln., Repert. Spec. Nov. Regni Veg. 42: 269 (1937).

Haworthia xiphiophylla Baker in W.H.Harvey & auct. suc. (eds.), Fl. Cap. 6: 354 (1896).

Haworthia zantneriana Poelln., Repert. Spec. Nov. Regni Veg. 41: 217 (1937).

Haworthia zantneriana var. minor M.B.Bayer, Haworthia Revisited: 164 (1999).

Haworthia zantneriana var. zantneriana.

Haworthia zenigata M.Hayashi, Haworthiad 15: 20 (2001).