Subspecies, varieties, forms and cultivars of plants belonging to the Mesembryanthemum digitatum group

Mesembryanthemum digitatum subs. littlewoodii, previously treated as a species of its own, is included in M. digitatus as a subspecies. Although the morphological distinctness between the two subspecies is merely a matter of dimensions, both taxa are geographically well separated. If properly grown, both subspecies will keep their shape and distinction even under cultivation.

• Mesembryanthemum digitatum Aiton: (subsp. digitatus) Leaves up to 120 mm long, flower to 20 mm in diameter. Leaf angle between "finger and thumb" < 90°. Flowrs to 20 mm Ø. In a good rainy season, the leaves of this sub-species may grow surprisingly long and chubby. Distribution: Cape Province (Distr Vanrhynsdorp, Vredendal).
• Mesembryanthemum digitatum subs. littlewoodii (L. Bolus) Klak: Leaves less than 50 mm long, flower 10-15 mm in diameter. Leaves angle between "finger and thumb" > 90° This miniature subspecies retains its dwarf habit even after unusually good rains. Distribution: N Vanrhynsdorp, Western Cape.