World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew

Hypericum quadrangulum f. undulatum (Schousb. ex Willd.) Borg, Descr. Fl. Malt. Isl.: 248 (1927).

This name is a synonym.

Homotypic Names:
Accepted Name:	Hypericum undulatum Schousb. ex Willd., Enum. Pl.: 810 (1809).
Family:	Hypericaceae
* Hypericum undulatum Schousb. ex Willd., Enum. Pl.: 810 (1809). Hypericum quadrangulum var. undulatum (Schousb. ex Willd.) Choisy in A.P.de Candolle, Prodr. 1: 548 (1824). Hypericum tetrapterum var. undulatum (Schousb. ex Willd.) S.Coult., Bol. Soc. Brot. 12: 21 (1895). Hypericum acutum subsp. undulatum (Schousb. ex Willd.) Rouy in G.Rouy & J.Foucaud, Fl. France 3: 337 (1896). Hypericum acutum var. undulatum (Schousb. ex Willd.) Pau, Bol. Soc. Aragonesa Ci. Nat. 8: 118 (1909). Hypericum maculatum subsp. undulatum (Schousb. ex Willd.) P.Fourn., Quatre Fl. France 2: 453 (1946). Hypericum tetrapterum subsp. undulatum (Schousb. ex Willd.) P.Silva, Agron. Lusit. 12: 271 (1951). Hypericum quadrangulum subsp. undulatum (Schousb. ex Willd.) Rivas Goday & Borja, Anales Inst. Bot. Cavanilles 19: 380 (1961). * Basionym/Replaced Synonym
Original Compiler:	R.Govaerts