Origin and Habitat: Aiquile to Santiago, Cochabamba. Bolivia
Altitude: 2400-2900 above sea level.

• Sulcorebutia santiaginiensis Rausch
• Sulcorebutia mentosa subs. santiaginiensis
• Sulcorebutia purpurea var. santiaginiensis....
• Sulcorebutia purpurea subs. santiaginiensis (Rausch) Slaba

• Rebutia mentosa (F.Ritter) Donald
• Sulcorebutia mentosa F.Ritter
• Weingartia mentosa (F.Ritter) F.H.Brandt
• Sulcorebutia albissima (F.H.Brandt) Pilbeam
• Sulcorebutia albata hort., Kníže
• Sulcorebutia albida hort., Kníže
• Weingartia albissima F.H.Brandt
• Weingartia mentosa var. albissima (F.H.Brandt) Hentzschel & K.Augustin
• Sulcorebutia albissima f. pectinifera hort.
• Sulcorebutia cupreata Kníže, n.n.
• Sulcorebutia х erinacea Slaba & Šorma non F.H.Brandt
• Sulcorebutia flavida (F.H.Brandt) Pilbeam
• Weingartia flavida F.H.Brandt
• Sulcorebutia flavissima Rausch
• Sulcorebutia mentosa var. flavissima (Rausch) Šída
• Weingartia flavissima (Rausch) F.H.Brandt
• Sulcorebutia formosa (F.H.Brandt) Pilbeam
• Weingartia formosa F.H.Brandt
• Sulcorebutia mairanana hort.
• Sulcorebutia santiaginiensis Rausch
• Sulcorebutia mentosa subs. santiaginiensis
• Sulcorebutia purpurea var. santiaginiensis....
• Sulcorebutia purpurea subs. santiaginiensis (Rausch) Slaba
• Sulcorebutia swobodae K.Augustin
• Weingartia mentosa var. swobodae (K.Augustin) Hentzschel & K.Augustin
• Sulcorebutia torotorensis (Cárdenas) F.H.Brandt
• Cinnabarinea torotorensis (Cárdenas) F.Ritter
• Weingartia torotorensis Cárdenas
• Sulcorebutia unguispina Rausch
• Sulcorebutia purpurea var. unguispina (Rausch) K.Augustin & Gertel in K.Augustin, Gertel & Hentzschel
• Sulcorebutia unguispina Rausch
• Weingartia purpurea var. unguispina (Rausch) Hentzschel & K.Augustin

• Rebutia mentosa subs. purpurea (Donald & A.B.Lau) Donald ex D.R.Hunt
• Cinnabarinea purpurea (Donald & A.B.Lau) F.Ritter
• Sulcorebutia purpurea (Donald & A.B.Lau) Bredero & Donald
• Weingartia purpurea Donald & A.B.Lau

Description: Sulcorebutia santiaginiensisSN|15219]]SN|15219]] is one of the innumerable local form of the very variable Rebutia mentosaSN|5257]]SN|5257]], it is very similar (if not the same) as Rebutia mentosa subs. purpurea but (?) with somewhat weaker spines.
Habit: is one of the larger headed species, solitary or sometime clustering in cultivation when the main head is about 5-7 cm in diameter .
Remarks: This Taxon has lots of synonyms (like many other cacti) whit several controversial varieties and subspecies and comprises a multitude of different forms, but where each form is linked to others by populations of plants with intermediate characteristics
Roots: It has long Dahlia like tuberous roots.
Stem: Grass-green, flattened globular, hemispherical or shortly cylindrical, depressed at apex, 4-9 cm tall 3-4 cm in diameter.
Ribs: About 18, completely divided into tubercles and unrecognisable; tubercles, spiralling about 4 x 5 cm with chinned protrusions.
Areoles: 4-6 mm long, elongate and felted, up to 1 cm apart.
Spines: Sand coloured, light-brown to reddish brown or whitish strong, comb-like, spreading out and bent down to the body.
Central spines: 4-6 speading, 12-18 mm long.
Radial spines: 8-10, 10-14 mm long.
Flowers: Showy that cluster around the lower stem about 2-3 cm tall, 3,5-4,5 cm in diameter, funnel-shaped with short necks (about 5 mm), purple to violet-red or dark red clove-shented.
Fruit: Dark reddish-brown with pale green scales 7-10 mm in diameter.

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 ISBN 0953813444, 9780953813445
3) Edward F. Anderson “The Cactus Family” Timber Press, 2001
4) John Pilbeam “Sulcorebutia and Weingartia: A Collector's Guide” Timber Press, 1985
5) Cyril Marsden, Herbert Spencer Jackson “Rebutia, Including Aylostera and Sulcorebutia” Macmillan, 1968
6) Terry Hewitt “Cacti” Lorenz Books, 01/Apr/1998
7) Gertel, W., de Vries J. (2008b): "A revision of the Sulcorebutias of the central distribution area – Part I" – Cactus & Co. 12 (4): 237 – 265
8) Gertel, W., de Vries J. (2006): "A revision of the Sulcorebutias of the northern distribution area – Part II" – Cactus & Co. 10 (1): 26 - 42
9) Gertel, W., de Vries J. (2007): "A revision of the Sulcorebutias of the northern distribution area – Part III" – Cactus & Co. 11 (3): 133 - 159

Cultivation and Propagation: Sulcorebutias are summer grower species easy to cultivate, more cold tolerant than most. These mountainous plants have thick taproots and are susceptible to overwatering. They requires also an appropriate air circulation and are sometime grafted to avoid root problems.
Growth rate: It is a relatively rapidly growing and easily flowering species that will make clumps given the best conditions.
Soils: It likes very coarse mineral cactus mix soil, but can become too elongated if compost is too rich.
Repotting: Use pot with good drainage.
Watering: Water regularly from Spring to Autumn, but do not overwater(Rot prone), it must be strictly kept dry throughout the winter quiescent period since it is very sensitive to any moisture excesseskeep dry in winter.
Fertilization: Feed with a high potassium fertilizer in summer.
Hardiness: They need to be kept in a cool place during winter rest and are somewhat resistant to frost if kept on the dry side prior to, and during, cold weather (due to the altitude they are hardy to -7 C ° C, or less for short periods). The cold is important for the flowers, as well as for their health. Without this cool winter period, they normally won't get any buds.
Exposition: Requires full sun or light shade and careful watering to keep plant compact with strong coloured spines. Tends to bronze in strong light, which encourages flowering and heavy spine production. Light shadow my be useful in the hottest summer days.
Uses: It is an excellent plant for container growing. It always looks good and stays small. It look fine in a cold greenhouse and frame or outdoor in a rockery.
Pests & diseases: It may be attractive to a variety of insects, but plants in good condition should be nearly pest-free, particularly if they are grown in a mineral potting-mix, with good exposure and ventilation. Nonetheless, there are several pests to watch for:
- Red spiders: Red sopiders may be effectively rubbed up by watering the infested plants from above.
- Mealy bugs: Mealy bugs occasionally develop aerial into the new growth among the wool with disfiguring results, but the worst types develop underground on the roots and are invisible except by their effects.
- Sciara Flies: Sciara flies are one of the major problems for seedlings. It is a good practice to mulch your seedlings with a layer of grit, which will strongly discourage the flies.
- Scales: Scales are rarely a problem.
It is wise to treat your whole collection with a systemic insecticide twice a year in spring and autumn.
- Rot: Rot is only a minor problem with cacti if the plants are watered and “aired” correctly. If they are not, fungicides won't help all that much. To prevent rottenness it is also advisable to surround its root neck by very rough sand or grit, this help a fast water drainage.
Propagation: Seed, cutting, grafting. Seeds germinate in 7-14 days at 21-27° C in spring, remove gradually the glass cover as soon the plants will be well rooted (ca 1-2 weeks) and keep ventilated, no full sun for young plants!