Origin and Habitat: North-east Argentina (Jujuy, Salta), south east Bolivia
Type locality: A cuatro horas a mula oeste de Huacalera, Tilcara (Jujuy, Argentina)

• Rebutia einsteinii subs. gonjianii (R.Kiesling) Hjertson
• Aylostera gonjianii (R.Kiesling) Mosti & Papini
• Cylindrorebutia gonjianii (Wahl)
• Digitorebutia einsteinii var. gonjianii
• Digitorebutia gonjianii (Wahl)
• Lobivia einsteinii var. gonjianii (R.Kiesling) Rausch
• Lobivia gonjianii (R.Kiesling) R.Kiesling
• Mediolobivia einsteinii var. gonjianii
• Mediolobivia gonjianii hort. sensu R.Kiesling
• Rebutia einsteinii var. gonjianii (R.Kiesling) Donald
• Rebutia gonjianii R.Kiesling

• Rebutia einsteinii Frič in Möller
• Aylostera einsteinii (Frič ex Kreuz. & Buining) Mosti & Papini
• Cylindrorebutia einsteinii Frič ex Kreuz. & Jucker
• Lobivia einsteinii (Frič) Rausch
• Mediolobivia schmiedcheniana var. einsteinii (Frič) Backeb.
• Rebulobivia einsteinii Frič
• Mediolobivia auranitida var. flaviflora Backeb.
• Rebutia auranitida (Wessner) Buining & Donald
• Cylindrorebutia auranitida (Wessner) Bredero
• Lobivia auranitida Wessner
• Mediolobivia auranitida (Wessner) Krainz
• Rebutia brighignae Mosti & Papini
• Aylostera brighignae (Mosti & Papini) Mosti & Papini
• Rebutia einsteinii f. columnaris (Wessner) Buining & Donald
• Cylindrorebutia columnaris (Wessner) Bredero
• Lobivia columnaris Wessner
• Mediolobivia columnaris (Wessner) Krainz
• Mediolobivia conoidea var. columnaris (Wessner) Backeb.
• Rebutia conoidea var. columnaris B.Fearn & Pearcy
• Rebutia einsteinii var. columnaris (Wessner) Buining & Donald
• Rebutia einsteinii var. conoidea (Wessner) Buining & Donald
• Lobivia conoidea Wessner
• Mediolobivia conoidea (Wessner) Krainz
• Rebutia einsteinii f. conoidea (Wessner) Donald
• Cylindrorebutia conoidea (Wessner) Bredero
• Rebutia einsteinii f. karreri (Backeb.) Buining & Donald
• Mediolobivia schmiedcheniana var. karreri Backeb.
• Rebutia karrerii Frič in Möller
• Rebutia einsteinii f. rubriviridis (Frič ex Backeb.) Donald
• Mediolobivia schmiedcheniana var. rubriviridis Frič ex Backeb.
• Rebutia einsteinii var. steineckei (Backeb.) Buining & Donald
• Mediolobivia schmiedcheniana var. steineckei Backeb.
• Rebutia euanthema f. neopygmaea (Backeb.) Buining & Donald
• Mediolobivia neopygmaea Backeb.
• Rebutia fischeriana Slaba
• Aylostera fischeriana (Slaba) Mosti & Papini
• Rebutia nicolaii Frič in Möller
• Cylindrorebutia nicolai Frič
• Mediolobivia einsteinii f. Nicolai hort. sensu Frič, Donald
• Rebulobivia nicolai Frič & Kreuz.

• Rebutia einsteinii subs. aureiflora (Backeb.) Hjertson
• Aylostera aureiflora (Backeb.) Mosti & Papini
• Lobivia aureiflora (Backeb.) H.P.Kelsey & Dayton
• Mediolobivia aureiflora (Backeb.) Backeb.
• Rebutia aureiflora Backeb.
• Mediolobivia aureiflora var. carminata (Backeb.) Backeb.
• Mediolobivia carminata Backeb. ex Krainz
• Mediolobivia aureiflora var. longiseta Backeb.
• Lobivia longiseta (Backeb.) H.P.Kelsey & Dayton
• Mediolobivia longiseta (Backeb.) Backeb.
• Mediolobivia aureiflora subvar. leucolutea Backeb.
• Mediolobivia aureiflora subvar. lilacinostoma Backeb.
• Mediolobivia rubriflora var. compactiflora (Wessner) Krainz
• Mediolobivia blossfeldii var. compactiflora Wessner
• Mediolobivia rubriflora var. nigrilongiseta (Wessner) Krainz
• Mediolobivia blossfeldii var. nigrilongiseta Wessner
• Mediolobivia turbiniformis Backeb. ex Frič & Kreuz.
• Setirebutia turbiniformis Frič
• Rebutia aureiflora var. albiseta (Backeb.) Borg
• Mediolobivia aureiflora var. albiseta Backeb.
• Setirebutia albiseta (Backeb.) Frič ex Kreuz.
• Rebutia aureiflora var. albi-longiseta (Backeb.) W.T.Marshall
• Mediolobivia aureiflora var. albi-longiseta Backeb.
• Mediolobivia longiseta var. albi-longiseta Backeb.
• Rebutia aureiflora var. blossfeldii (Werderm.) Donald
• Mediolobivia blossfeldii (Werderm.) Buining
• Mediolobivia rubriflora var. blossfeldii (Werderm.) Krainz
• Rebutia blossfeldii Werderm.
• Rebutia aureiflora f. boedekeriana (Backeb.) Šída
• Mediolobivia aureiflora var. boedekeriana (Backeb.) Backeb.
• Mediolobivia boedekeriana Backeb.
• Rebutia aureiflora f. duursmaiana (Backeb.) Šída
• Mediolobivia aureiflora var. duursmaiana (Backeb.) Backeb.
• Mediolobivia duursmaiana Backeb.
• Rebutia aureiflora var. elegans (Backeb.) Buining & Donald
• Mediolobivia elegans Backeb.
• Rebutia aureiflora subs. elegans (Backeb.) Donald
• Rebutia einsteinii var. elegans (Backeb.) Rausch
• Rebutia aureiflora f. kesselringiana (Cullmann) U.Köhler
• Mediolobivia kesselringiana Cullmann
• Rebutia aureiflora var. blossfeldii f. kesselringiana (Cullmann) Donald
• Rebutia aureiflora f. rubelliflora (Backeb.) Buining & Donald
• Mediolobivia aureiflora var. rubelliflora (Backeb.) Backeb.
• Mediolobivia rubelliflora Backeb.
• Rebutia aureiflora f. rubriflora (Backeb.) Buining & Donald
• Mediolobivia aureiflora var. rubriflora (Backeb.) Backeb.
• Mediolobivia rubriflora Backeb.
• Rebutia aureiflora f. sarothroides (Werderm.) Buining & Donald
• Mediolobivia aureiflora var. sarothroides (Werderm.) Backeb.
• Mediolobivia sarothroides (Werderm.) Buining
• Rebutia aureiflora var. sarothroides (Werderm.) Donald
• Rebutia sarothroides Werderm.
• Rebutia euanthema (Backeb.) Buining & Donald
• Acantholobivia euanthema (Backeb.) Y.Itô
• Lobivia euanthema Backeb. in Backeb. & F.M.Knuth
• Mediolobivia euanthema (Backeb.) Krainz
• Rebutia euanthema f. fricii (Backeb.) Buining & Donald
• Mediolobivia euanthema var. fricii Backeb.
• Rebutia oculata Werderm.
• Aylostera oculata (Werderm.) Mosti & Papini
• Mediolobivia euanthema var. oculata (Werderm.) Krainz
• Rebutia euanthema f. oculata (Werderm.) Buining & Donald
• Rebutia oculata subs. tilcarensis (Rausch) Mosti
• Aylostera oculata subs. tilcarensis (Rausch) Mosti & Papini
• Lobivia euanthema var. tilcarensis Rausch
• Rebutia tilcarensis (Rausch) Šída
• Rebutia orurensis (Backeb.) F.Ritter
• Aylostera orurensis (Backeb.) Mosti & Papini
• Digitorebutia haagei var. orurensis (Backeb.) Donald
• Digitorebutia orurensis (Backeb.) Buining
• Lobivia orurensis Backeb. in Backeb. & F.M.Knuth
• Mediolobivia haagei var. orurensis (Backeb.) Donald
• Mediolobivia orurensis (Backeb.) Backeb.
• Mediolobivia pectinata var. orurensis (Backeb.) Backeb.
• Setirebutia disciformis Frič

• Rebutia einsteinii subs. gonjianii (R.Kiesling) Hjertson
• Aylostera gonjianii (R.Kiesling) Mosti & Papini
• Cylindrorebutia gonjianii (Wahl)
• Digitorebutia einsteinii var. gonjianii
• Digitorebutia gonjianii (Wahl)
• Lobivia einsteinii var. gonjianii (R.Kiesling) Rausch
• Lobivia gonjianii (R.Kiesling) R.Kiesling
• Mediolobivia einsteinii var. gonjianii
• Mediolobivia gonjianii hort. sensu R.Kiesling
• Rebutia einsteinii var. gonjianii (R.Kiesling) Donald
• Rebutia gonjianii R.Kiesling
• Rebutia einsteinii subs. gonjianii f. cristata hort.
• Rebutia eichlami var. gonzalesii f. cristata hort.
• Rebutia gonjianii f. cristata hort.

Description: Rebutia gonjianiiSN|4990]]SN|11211]] (Rebutia einsteinii subs. gonjianiiSN|11210]]SN|11210]]) is a minuscule, slender, clumping cactus with thin finger-like stems branching from the base or higher in the manner of a miniature saguaro. This species is often seen lumped with Rebutia einsteiniiSN|11211]]SN|4990]].
Stems: Cylindrical, dark brownish-green coloured, but green in the new growth, and only about as thick as a pencil (1-1,2 cm in diameter). It would appear that in cultivation these plants grow larger, elongate and cluster more vigorously than in habitat.
Root: Thick, fleshy taproot.
Areoles: Thin, elogate, brown felted.
Spines: Tiny, pectinated less than 1 mm long.
Flowers: Large yellow, with a tinge of orange or brownish-yellow, from near stems bases.
Blooming Season: Blooms profusely in spring.

Cultivation and Propagation: This species is probably the most difficult Rebutia to grow on its own (tuberous) roots, and it is often grown grafted. It tends to rot if too wet, and is best kept in a somewhat sheltered location. Careful waterings helps to keep the plant compact. Grow it in a very open mineral mix, (lots of pumice). Keep dry in winter. Hardy to -4°C for a short period. Rebutias grow in nature at high altitudes, and do not thrive well at high temperatures in cultivation. They will often go dormant in mid-summer and resume growth again when the weather cools in late August. They can tolerate amazingly low temperatures for long periods of time. All species can take frost, even when not bone dry. It is generally accepted that plants kept at too high a temperature, or watered too much during the winter rest period, will not bloom the following year. Give them an airy spot, and ensure good drainage. It is better that they be repotted regularly. Pots should be only slightly larger than the plant and root system.
The roots can break during repotting, and it is best to leave the compost dry for a while after repotting, to avoid rot. Repotting will increase the number and size of stems, and will increase the number of flowers produced. Repot yearly until reaching about 3 cm in size, then every two or three years will suffice. Repotting is best done at the end of winter, but can be done at other times, too. All plants, especially the young ones, are susceptible to red spider mites.
Propagation: By seeds or offsets (If available). The stems of larger grafted specimens can be rooted, but grow quite slowly. It makes sense to keep some stock plants for future propagation, or to replace the eventaul plant that rots or dies