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Accepted Scientific Name: Rebutia steinmannii var. camargoensis (Rausch) Pilbeam
in Cact. File, 10(2): 18 (1996), without basionym ref.; Repert. Pl. Succ. (I.O.S.), 47: 11 (1996 publ. 1997)
Origin and Habitat: Cochabamba, Potosi, Bolivia.
Altitude: 2000-3000 metres above sea level.
Habitat: It grows in rocky slopes and sandstone crevices.
- Rebutia steinmannii var. camargoensis (Rausch) Pilbeam
Rebutia steinmannii (Solms) Britton & Rose
Cactaceae (Britton & Rose)
- 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
- 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
- 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
Rebutia steinmannii var. camargoensis (Rausch) Pilbeam
in Cact. File, 10(2): 18 (1996), without basionym ref.;
- Rebutia steinmannii var. camargoensis (Rausch) Pilbeam
Description: Rebutia caineana is a most attractive low growing cactus. It distinguish for the very numerous yellow flowers. Rebutia caineana is more usually known as Sulcorebutia breviflora, but this name is preceded by Sulcorebutia caineana that is now considered the prior scientific name.
Habit: It was originally described as solitary, but clusters heavily in cultivation producing a nice patch over time.
Roots: Long carrot-like.
Stem: Globular, flattened, or somewhat elongated-cylindrical in cultivation, 1,5-2(-6) cm high, 5-6(-10) cm in diameter, varying in lengths, dark, brownish-green to dark green partially obscured by the spines.
Ribs: Forming clearly divided into tubercles.
Areoles: Elongate, greyish.
Radial spines: 10-16, off-white, greyish, to light brown, pectinately arranged, lying against the surface and interlacing, stiff, needle-like, 2-16 mm long.
Central spines: Up to 4 or absent, 3-10 mm long.
Flowers: Several from the base, small clear-yellow, golden-yellow or orange, 2-4 cm long, up to 3 cm in diameter; pericarpels with tufts of white hair.
Fruits: Greenish to reddish 4 to 5 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/1998John Pilbeam “Rebutia” Cirio Pub. Services, 01/May/1997
7) Edgar Lamb, Brian Lamb “The Illustrated Reference on Cacti & Other Succulents, Volume 5” Blandford Press, 1978
8) Clive Innes, Charles Glass “Cacti” Portland House, 01/May/1991
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 excesses keep 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 spiders 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!
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