M.P.de Vos ex Goldblatt (Burchell) 1985 - Goldblatt P (1985) Systematics of the Southern African Genus Geissorhiza (Iridacea-Ixioideae). Annals of the Missouri Botanical Garden 72(2): 277. doi: 10.2307/2399183.
There is no corrections for Geissorhiza spiralis yet.