Origin and Habitat: Bolivia (La Paz, Potosi and Tarija) and Argentina (Jujuy)
Altitude range: Around 3600-3800 metres above sea level.

• Rebutia steinmannii var. costata (Werderm.) Pilbeam
• Digitorebutia costata (Werderm.) Buining
• Lobivia steinmannii var. costata (Werderm.) Rausch
• Mediolobivia costata (Werderm.) Krainz
• Rebutia costata Werderm.

• Rebutia steinmannii (Solms) Britton & Rose
• Aylostera steinmannii (Solms) Backeb.
• Digitorebutia steinmannii (Solms) Buining
• Echinocactus steinmannii Solms
• Lobivia steinmannii (Solms) Backeb.
• Mediolobivia pectinata var. steinmannii (Solms) Y.Itô
• Mediolobivia steinmannii (Solms) Krainz
• Rebutia applanata (Rausch) Mosti
• Aylostera applanata (Rausch) Mosti & Papini
• Lobivia steinmannii var. applanata Rausch
• Rebutia brachyantha (Wessner) Buining & Donald
• Aylostera brachyantha (Wessner) Mosti & Papini
• Digitorebutia brachyantha (Wessner) Buining
• Lobivia brachyantha Wessner
• Mediolobivia brachyantha (Wessner) Krainz
• Rebutia christinae Rausch
• Aylostera christinae (Rausch) Mosti & Papini
• Digitorebutia christinae Rausch
• Lobivia steinmannii var. christinae (Rausch) Rausch
• Mediolobivia christinae hort. sensu Rausch
• Mediolobivia steinmannii var. christinae hort. sensu Rausch
• Rebutia steinmannii var. christinae (Rausch) Pilbeam
• Rebutia cincinnata Rausch
• Aylostera cincinnata (Rausch) Mosti & Papini
• Digitorebutia cincinnata Rausch
• Lobivia steinmannii var. cincinnata (Rausch) Rausch
• Rebutia steinmannii var. cincinnata (Rausch) F.Ritter
• Rebutia eucaliptana (Backeb.) F.Ritter
• Digitorebutia costata var. eucaliptana (Backeb.) Donald
• Digitorebutia eucaliptana (Backeb.) Buining
• Lobivia eucaliptana Backeb.
• Mediolobivia costata var. eucaliptana (Backeb.) Donald
• Mediolobivia eucaliptana (Backeb.) Krainz
• Rebutia costata f. eucaliptana (Backeb.) Buining & Don
• Rebutia steinmannii var. eucaliptana (Backeb.) Šída
• Rebutia huarinensis Kníže
• Mediolobivia huarinensis Kníže
• Rebutia leucacantha (Rausch) Šída
• Aylostera leucacantha (Rausch) Mosti & Papini
• Lobivia steinmannii var. leucacantha Rausch
• Rebutia steinmannii var. leucacantha (Rausch) Mosti
• Rebutia major (Rausch) Mosti
• Aylostera major (Rausch) Mosti & Papini
• Lobivia steinmannii var. major Rausch
• Rebutia marieae Lad.Fisch. & Halda
• Rebutia parvula (Rausch) Mosti
• Aylostera parvula (Rausch) Mosti & Papini
• Lobivia steinmannii var. parvula Rausch
• Rebutia steinmannii var. parvula (Rausch) Pilbeam
• Rebutia poecilantha F.Ritter
• Rebutia potosina F.Ritter
• Rebutia rauschii Zecher non G.Frank
• Digitorebutia rauschii Zecher
• Lobivia steinmannii var. rauschii (Zecher) Rausch
• Rebutia steinmannii var. rauschii (Zecher) Pilbeam
• Rebutia steinmannii var. costata (Werderm.) Pilbeam
• Digitorebutia costata (Werderm.) Buining
• Lobivia steinmannii var. costata (Werderm.) Rausch
• Mediolobivia costata (Werderm.) Krainz
• Rebutia costata Werderm.
• Rebutia steinmannii var. melanocentra (Rausch) Mosti
• Aylostera melanocentra (Rausch) Mosti & Papini
• Lobivia steinmannii var. melanocentra Rausch
• Rebutia melanocentra (Rausch) Šída
• Rebutia tuberculata (Rausch) Šída
• Aylostera tuberculata (Rausch) Mosti & Papini
• Lobivia steinmannii var. tuberculata Rausch
• Rebutia steinmannii var. tuberculata (Rausch) Mosti

• Rebutia steinmannii var. camargoensis (Rausch) Pilbeam
• Aylostera camargoensis (Rausch) Mosti & Papini
• Lobivia steinmannii var. camargoensis (Rausch) Rausch
• Rebutia camargoensis Rausch

Description: Rebutia steinmanniiSN|5056]]SN|5056]] var. costata, formerly described as Rebutia costataSN|5056]]SN|5088]] by Werdermann in 1934, is one of the innumerable forms of the widespread and morphologically variable Rebutia steinmanniiSN|5088]]SN|5056]]. It is a small cactus distinguished from the type species for its 8 or 9 straight ribs (a low count for this species). The names Rebutia steinmanniiSN|5056]]SN|5056]] var. costata is not accepted by many botanists that treat it as synonym, but it still has a value for a collector because they identify plants with particular characters.
Stem: Deep green, about 3 cm tall and 2 cm wide in cultivation.
Ribs: 8-9 straight vertical.
Spines: 11-12 usually all radial, 7 mm long, with with an occasional similar central spine (greyish-brown, thin, bristle-like).
Flowers: 3 to 3.5 cm long and wide, orange-red, edged carmine, vividly coloured.

Bibliography: Major references and further lectures
1) John Pilbeam “Rebutia” Cirio Pub. Services, 01 May 1997

Cultivation and Propagation: Full sun to light shade, Water regularly in summer but do not overwater (the root system is rot prone) Keep dry in winter Hardy to -4°C. It is better that they are repotted regularly. Repotting will increase the number and size of stems and will increase the number of flowers produced. Repot yearly until reaching about 100mm 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. Do not water for a couple of weeks after repotting to reduce risk of root rot via broken roots.
Propagation: Offsets, seeds.