Subspecies, varieties, forms and cultivars of plants belonging to the Echinopsis ancistrophora group

• Echinopsis ancistrophora Speg.: has flowers of varying colors. Distribution: From south of Salta, Argentina to the border into southern Bolivia.
• Echinopsis ancistrophora subs. arachnacantha (Buining & F.Ritter) Rausch: has smaller clustering stems with yellow to yellow-orange flowers. Distribution: Region of Samaipata, Santa Cruz, Bolivia.
• Echinopsis ancistrophora subs. cardenasiana (Rausch) Rausch: has bright magenta to red flowers. Distribution: Tarija.
• Echinopsis ancistrophora var. densiseta (Rausch) Rausch: has longer end denser spines than some of the others and flowers are red. Distribution: Vallegrande, Santa Cruz, Bolivia, just at east of var. vallegrandensis.
• Echinopsis ancistrophora subs. pojoensis (Rausch) Rausch: has larger stems and reddish flowers. Distribution: Pojo, Cochabamba, Bolivia.
• Echinopsis ancistrophora var. sulphurea (R.Vásquez) Rausch
• Echinopsis ancistrophora var. torrecillasensis (Cárdenas) Rausch
• Echinopsis subdenudata Cárdenas: has a globose to elongate stems to up to 8 cm high with 8 to 12 -ribs. Almost spineless or with very short cream spines.
• Echinopsis subdenudata f. cristata aurea hort.: yellow mutant completely lacking chlorophyll pigment with fan shaped stems.
• Echinopsis subdenudata f. cristata hort.: is a very nice crested Echinopsis, easily recognizable for its almost spineless body.