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

Plectranthus longitubus var. albiflorus Makino in Y.Iinuma, Somoku-Dzusetsu, ed. 3, 3: 840 (1912).

This name is a synonym.

Homotypic Names:
Accepted Name:	Isodon longitubus (Miq.) Kud�, Mem. Fac. Sci. Taihoku Imp. Univ. 2: 139 (1929).
Family:	Lamiaceae
Amethystanthus longitubus var. albiflorus (Makino) Nakai, Bot. Mag. (Tokyo) 48: 790 (1934). Isodon longitubus f. albiflorus (Makino) H.Hara, Enum. Spermatophytarum Japon. 1: 208 (1948). Rabdosia longituba f. albiflora (Makino) H.Hara, J. Jap. Bot. 47: 197 (1972).
Original Compiler:	R.Govaerts