Subspecies, varieties, forms and cultivars of plants belonging to the Echinocereus knippelianus group

• Echinocereus knippelianus Liebner: Often forming clumps of as many as 50 stems, rarely rising above ground level. The stems are plump green with big taproot and bristly spines. Pink flowers at the sides.
• Echinocereus knippelianus subs. kaplani Halda & Sladk.
• Echinocereus knippelianus var. kruegeri Glass & R.A.Foster: Miniature form with fat green body, soft bristly spines, whitish or flesh-coloured flowers at centre.
• Echinocereus knippelianus var. reyesii A.B.Lau: Fat green bodies, stiffer spines. Larger, deep pink flowers at centre.