Subspecies, varieties, forms and cultivars of plants belonging to the Adromischus cristatus group

• Adromischus cristatus Lem.: (var. cristatus) has ridge at tip of leaf constitutes broadest point of leaf. Leaf-blade 1-1,5 times longer than breadth of apical ridge, leaves reversed-triangular. Distribution: Eastern cape.
• Adromischus cristatus var. clavifolius (Haw.) Toelken: has leaves 2-5 times longer than breadth of apical ridge, reversed-triangular to club-shaped, hairless nearly so. Distribution: Alexandria, Grahamstown and East London (Cape Province).
• Adromischus cristatus var. mzimvubuensis van Jaarsv.: has felted leaves covered with fine glandular hairs. Distribution: Mzimvubu River, Eastern Cape.
• Adromischus cristatus var. schonlandii (E.Phillips) Toelken: has stems 2-4 cm long, covered with aerial roots. Ridge at tip of leaves narrower than broadest point on leaf, inflorescence with glandular hairs.
• Adromischus cristatus var. zeyheri (Harv.) Toelken: has stems 4-8 cm long, without aerial roots, covered with glandular hairs. Distribution: Baviaanskloof , Eastern Cape.