Subspecies, varieties, forms and cultivars of plants belonging to the Rebutia einsteinii-aureiflora group

• Rebutia aureiflora var. albiseta (Backeb.) Borg: has 10 mm long white spines.
• Rebutia aureiflora var. albi-longiseta (Backeb.) W.T.Marshall: has long pure white bristles.
• Rebutia aureiflora f. boedekeriana (Backeb.) Šída: has has 11-12 thin radial spines and pale orange flowers.
• Rebutia aureiflora var. elegans (Backeb.) Buining & Donald
• Rebutia aureiflora f. rubelliflora (Backeb.) Buining & Donald: has orange-red flowers.
• Rebutia aureiflora f. rubriflora (Backeb.) Buining & Donald: has red flowers. Distribution: Salta, Argentina.
• Rebutia einsteinii Frič in Möller: (subs. einsteinii)
• Rebutia einsteinii subs. aureiflora (Backeb.) Hjertson: Has large mostly yellow or orange flowers with white throat. It is very variable. Distribution: North-west Argentina near to the Salta – Jujuy border around Quebrada del Toro.
• Rebutia einsteinii subs. gonjianii (R.Kiesling) Hjertson: has minuscule, thin finger-like stems branching from the base or higher in the manner of a miniature saguaro, from a thick, fleshy taproot. Spines pectinated less than 1 mm long. Distribution: Huacalera, Tilcara (Jujuy, Argentina).
• Rebutia einsteinii subs. gonjianii f. cristata hort.: Crested form.
• Rebutia euanthema (Backeb.) Buining & Donald
• Rebutia oculata Werderm.: has deep lateral incisions between areoles, few (6-8) radial spines less than 12 mm long and crimson flowers 4,5 cm long, 5 cm wide. Stigma pale green. Distribution: Challapata, Bolivia.