Antegibbaeum fissoides is synonymously known as Gibbaeum fissoides, Gibbaeum nelii, Mesembryanthemum divergens, Mesembryanthemum fissoides and Mesembryanthemum obtusum. This species is endemic to the western Little Karoo, where it occurs from Touws River to Barrydale. It occurs in quartz patches, often growing alongside Gibbaeum species. Antegibbaeum fissoides is a slow growing succulent species forming grey-green tufts of finger-like leaves. Its showy, purple blossoms appear in winter and open during the day.