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  Sulcorebutia polymorpha CACTUS ART
NURSERY

Cultivation and Mail Sale
of Cacti and Succulents.

 


Produces masses of gorgeous deep violet  (or yellow) flowers in late spring.
 


Floral tube funnelform with tan coloured scales.


Ribs with oblong rhomboidal grooved tubercles.


Cultivation:
S. polymorpha 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 and an appropriate air circulation. Plants are quite frost hardy -5 (-10)° C
Watering Needs: Water moderately in the growing season, keep dry during  the winter rest
Frost Tolerance: 
Overwinter  in a cool place (at 0/10°C)  this is important for the flowers as well as for plants health. Without this cool winter period they normally wont get any buds. Sun Exposure: Needs a full sun exposure ( light shadow my be useful in the hottest summer days)
Propagation: Seed, cutting, grafting


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Family: Cactaceae (Cactus Family)

Sulcorebutia polymorpha (Cárdenas) Backeberg, Das Kakteenlexikon, p.416, 1966

Scientific Name: Sulcorebutia steinbachii Werderman 1931

Distribution: Cochabamba department, Bolivia

Habitat: Grows mainly on a flat, dry, stony area along the banks of the Rio Lopez, just before the moister zone of the tiraquensis populations. Altitude 2950 – 3700 m.

Conservation status: Listed in CITES Appendix II.

Synonyms:

     
  • Rebutia polymorpha Card., Neue und interessante Kakteen aus Bolivien
  • Rebutia polymorpha Cárd. spec. nov., Kakt. und and. Sukk., 16: 115, 1965
  • Weingartia polymorpha (Card.) Brandt, Kakt. Orch.-Rundschau, 2:70, 1977
  • Sulcorebutia steinbachii var. polymorpha (Cárdenas) J. Pilbeam, Sulcorebutia and Weingartia, A Collector´s Guide, p. 80, 1985
  • Sulcorebutia steinbachii subvar. polymorpha

Description: This Sulcorebutia has been named polymorpha (which means "many forms") for the variability of the plant in habitat. It is a clumping plant (rarely solitary) , readily forms clumps of many heads and are typical for S. steinbachii.
Stem: 24-40 mm tall, up to 50 mm wide, flattened globose, dark green sometime tinged red.
Ribs: 12-26 poorly distinguished, forming oblong rhomboidal grooved tubercles.
Areoles:
Long narrow with short grey felt (almost naked) 3 – 6 long, 1,5-2 mm large.
Radial spines: 9-14, about 10 mm long, addpressed against the body, white, yellow, brown with darker tips or almost black, ±curved slow to develops, frequently absent on new areoles at plant apex.
Central spines: None or 1 to 3 stouter 20-30 mm long.
Flowers: Up to 3,5 cm long and 4,5 in diameter, yellow or (usually) magenta , both colours occurring at random in habitat. Magenta flowers with yellow or white inner petals are also available.
Floral tube funnel-shaped.
Phenology: Blossoming time:  late spring.
Fruits: Olive green
to reddish brown at maturity.

 


Conspecific taxa, varieties, forms and cultivars of plants belonging to the Sulcorebutia steinbachi complex (This Taxon has lots of synonyms 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):

 

Photo gallery: Alphabetical listing of Cactus and Succulent pictures published in this site.

Photo gallery SULCOREBUTIA

Home | E-mail | Plant files | Mail Sale Catalogue | Links | Information | Search

All the information and photos in cactus art files are now available also in the new the Enciclopedia of Cacti. We hope you find this new site informative and useful.