Origin and Habitat: Cochabamba, Bolivia, South America. The species has a very restricted range (area of occupancy <20km2 ) and it is known only from the type locality.
Altitude: 1,500-1,600 metres above sea level.
Habitat and Ecology: Rebutia arenaceaSN|15056]]SN|15056]] grows in seasonally dry inter-Andean valley. The species is naturally scarce and near Threatened because there are no obvious threats affecting it. The plant is use as an ornamental in specialised collections, come from cultivation, not from wild populations.

• Rebutia arenacea Cárdenas
• Sulcorebutia arenacea (Cárdenas) F.Ritter
• Weingartia arenacea (Cárdenas) F.H.Brandt

• Rebutia arenacea Cárdenas
• Sulcorebutia arenacea (Cárdenas) F.Ritter
• Weingartia arenacea (Cárdenas) F.H.Brandt
• Rebutia candiae Cárdenas
• Sulcorebutia arenacea var. candiae (Cárdenas) Gertel & J.de Vries
• Sulcorebutia candiae (Cárdenas) Buining & Donald
• Weingartia arenacea var. candiae (Cárdenas) Hentzschel & K.Augustin
• Weingartia candiae (Cárdenas) F.H.Brandt
• Rebutia glomeriseta Cárdenas
• Sulcorebutia glomeriseta (Cárdenas) F.Ritter
• Weingartia glomeriseta (Cárdenas) F.H.Brandt
• Rebutia menesesii Cárdenas
• Sulcorebutia arenacea var. menesesii (Cárdenas) Gertel & J.de Vries
• Sulcorebutia menesesii (Cárdenas) Buining & Donald
• Weingartia arenacea var. menesesii (Cárdenas) Hentzschel & K.Augustin
• Weingartia menesesii (Cárdenas) F.H.Brandt
• Sulcorebutia arenacea var. kamiensis (Bredero & Donald) Gertel & J.de Vries
• Sulcorebutia arenacea var. kamiensis (Bredero & Donald) Gertel & J.de Vries
• Sulcorebutia candiae var. kamiensis (Bredero & Donald) K.Augustin & Gertel in K.Augustin, Gertel & Hentzschel
• Sulcorebutia menesesii var. kamiensis Bredero & Donald
• Weingartia arenacea var. kamiensis (Bredero & Donald) Hentzschel & K.Augustin
• Sulcorebutia muschii R.Vásquez
• Sulcorebutia menesesii var. muschii (R.Vásquez) Buining & Donald
• Sulcorebutia muschii R.Vásquez
• Weingartia muschii (R.Vásquez) F.H.Brandt
• Sulcorebutia xanthoantha Backeb.

Description: Rebutia arenaceaSN|15059]]SN|15056]], better known as SulcoSN'>15057' alt='15080'>Rebutia arenacea#SN#15056'>Sulco[[Rebutia arenaceaSN' style='border:none;'>, is a choice solitary user-friendly plant, with perfectly neat, symmetrical pectinate spination and profuse yellowish orange flowers. This cactus is indeed beautiful even without its blooms.
Habit: It is a low-growing geophytic, stem-succulent. The stems can form pups after a certain size and age.
Related species: It is closely allied and intergrades with Rebutia glomerisetaSN|15056]]SN|15080]] and Rebutia candiaeSN|15056]]SN|15059]] that grows in the same area. They may all be different forms of the same polymorphic species.
Stems: Globoid flat to the ground 2-4 cm tall 2,-6 cm in diameter, yellowish/greenish to brownish/purple, with about 30 spiralled and strong tuberculate ribs.
Areoles: Elongate, creamy grey.
Spines: 14-16, Tiny, up to 4(-5) mm long, minutely pubescent whitish yellowish, amber or tan smooth, pectinate held tightly that give a sandy effect.
Flower: Very nice 2,5/3 cm large and long, yellow to yellowish-orange.
Blooming season: Late winter to spring.
Fruits: Reddish brown.

Bibliography: Major references and further lectures
1) James Cullen, Sabina G. Knees, H. Suzanne Cubey “The European Garden Flora Flowering Plants: A Manual for the Identification of Plants Cultivated in Europe, Both Out-of-Doors and Under Glass” Cambridge University Press, 11/Aug./2011
2) David Hunt, Nigel Taylor “The New Cactus Lexicon” DH Books, 2006
3) Edward F. Anderson “The Cactus Family” Timber Press, 2001
4) Anderson E. F.: "The Cactus Family" Timber Press, Portland, Oregon, 2001
5) Ritter Fr.: "Kakteen in Südamerika" Spangenberg, 1980
6) John Pilbeam "Sulcorebutia and Weingartia: A Collector's Guide" Timber Press, 1985
7) E Haustein “Der Kosmos Kakteenfuehrer (the Kosmos Cactus Guide)” Balogh Scientific Books 01 December 1998
8) Cullmann W., Götz E., Gröner G.”Kakteen: Kultur, Vermehrung und Pflege - Lexikon der Gattungen und Arten” Ulmer, Stuttgart, 1984
9) Lowry, M. & Carr, J. 2013. Rebutia arenacea. The IUCN Red List of Threatened Species. Version 2014.3. <www.iucnredlist.org>. Downloaded on 27 December 2014.

Cultivation and Propagation: These mountainous plants have thick taproots and are susceptible to overwatering. They loves a very permeable, coarse mineral soil as well as to be strictly kept dry throughout the winter quiescent period since it is very sensitive to any moisture excesses, To prevent rottenness it is also advisable to surround its root neck by very rough sand or grit, this help a fast water drainage. They requires also an appropriate air circulation and are sometime grafted to avoid root problems. They need to be kept in a cool place during winter rest (at 0-10°C). This is important for the flowers ,as well as for their health. Without this cool winter period, they normally won't get any buds.
Grafted plants are very easy to grow, and are quite frost hardy (-5° C) if kept dry. Needs a full sun exposure ( light shadow my be useful in the hottest summer days)
Propagation: Seed, cutting, grafting