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

Plectranthus longitubus var. contractus Maxim., Bull. Acad. Imp. Sci. Saint-P�tersbourg, s�r. 3, 20: 451 (1875).

This name is a synonym.

Homotypic Names:
Accepted Name:	Isodon longitubus (Miq.) Kud�, Mem. Fac. Sci. Taihoku Imp. Univ. 2: 139 (1929).
Family:	Lamiaceae
Isodon longitubus var. contractus (Maxim.) Kud�, Mem. Fac. Sci. Taihoku Imp. Univ. 2: 139 (1929). Amethystanthus longitubus var. contractus (Maxim.) Nakai, Bot. Mag. (Tokyo) 48: 791 (1934). Rabdosia longituba var. contracta (Maxim.) H.Hara, J. Jap. Bot. 47: 197 (1972).
Original Compiler:	R.Govaerts