Of Sparaxis and Brunsvigia, which has the most species?  
Sparaxis: Sparaxis (harlequin flower) is a genus in the family Iridaceae with about 13 species endemic to Cape Province, South Africa. Brunsvigia: Brunsvigia is a flowering plant African plants in the Amaryllis family, subfamily Amaryllidoideae. Brunsvigia:  It contains about 20 species native to southeastern and southern Africa from Tanzania to Cape Province.
Brunsvigia