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Turbinicarpus schmiedickeanus
ssp. schwarzii

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T. schmiedickeanus ssp. schwarzii has a has typically a pale green epidermis, angled tubercles rising above the general level of the plant body .
 

Description: Solitary or slowly clumping , small, dichotomy also observed,
Stem: Flattened semi-globose; turbinate, pale green globose stem, with a further 30 mm underground, 2 cm tall, 3.5-5 cm in diameter, with minute dots of short white hairs, like down, watery sap;
Parastichy number: 5 and 8
Areoles: Oval, woolly, at top of plant, quickly disappear.
Tubercles: Flattened 4-angled (diamond shaped) broad and stumpy,
Spines: 1 to 3 spongy yellowish brown or whitish horn coloured, the lower one longer, up to 2 cm, the 2 side spine approximately 4-5 mm, often missing, still shorter, flattened below, curved towards the apex and often contorted grey, corky, rather soft, with transverse fissures. The spines are bunched at plant apex and persistent only on the upper body, below they fall off and the body and tubercles are corky and bare.
Root: Tap root, nearly shaped like a drawn molar tooth, with mass of fibrous roots.
Flowers: Apical short tubed, campanulate,  20-30 mm long, 30-40 mm wide, sepals lanceolate, margins entire, whitish or pink.
Flowering season: July to September


NOTE:
For a long time it was thought that T. smiedicheanus var. polaskii was a synonym of this taxa.. The easiest ways to distinguish between them are schwarzii has a pale green epidermis, angled tubercles and white stigma, whereas polaskii has a brownish epidermis, flat, rounded and pink stigma.
The dimensions given for the size of the flower are too large. In my experience each dimension needs to be reduced by at least 10 mm.

 

Photo of conspecific taxa, varieties, forms and cultivars of plants belonging to the Turbinicarpus schmiedicheanus aggregate:  (This taxon has lots of synonyms,  with several controversial varieties and subspecies):

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


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Family: Cactaceae (Cactus Family)

Scientific Name: Turbinicarpus schmiedickeanus subsp. schwarzii (Shurly) N.P.Taylor 1998

Basionim: Strombocactus schwarzii Shurly
Published in: Cact. Succ. J. GB 10(4): 93-94 (1948)

Etymology: Discovered by Fritz Schwarz and named, at his request, in his honour.
 

Distribution: Origin: Mexico (Eastern San Luis Potosí: La Bonita)

Habitat: Grows in heavy black earth among small green plants or grass and mostly under shrubs.


Conservation status: Listed in CITES Appendix I
 
Synonyms:
  • Turbinicarpus schwarzii (Shurly) Backeb. 1951
  • Toumeya macrochele var. schwarzii (Shurly) Kladiwa 1975
  • Toumeya schwarzii
  • Turbinicarpus macrochele ssp. schwarzii
  • Turbinicarpus schmiedickeanus var. schwarzii (Shurly) Glass & Foster 1977
  • Pediocactus schmiedickeanus subsp. schwarzii (Shurly) Halda 1998
  • Turbinicarpus schmiedickeanus var. schwarzii
  • Turbinicarpus schmiedickeanus ssp. klinkerianus fa. schwarzii
  • Neolloydia schmiedickeana var. schwarzii
  • Echinocactus schmiedickeanus


The stigma in this species is white
 

 

 


Turbinicarpus schwarzii (Guadalcazar)
 

Cultivation: It’s a fairly easy species to cultivate. Need a very well drained soil. Requires strong sun to part sun to develop good spinal growth and waterings should be rather infrequent to keep the plant compact and not to become excessively elongated and unnatural in appearance.  keep dry in winter or when night temperatures remain below 10° C, it is hardy to -4°C for a short period. Assure a good ventilation.

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.