Goldblatt 1992 - Goldblatt P (1992) Phylogenetic Analysis of the South African Genus Sparaxis (Including Synnotia) (Iridaceae-Ixioideae), with Two New Species and a Review of the Genus. Annals of the Missouri Botanical Garden 79(1): 143. doi: 10.2307/2399815.
There is no corrections for Sparaxis caryophyllacea yet.