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Epithelantha pachyrhiza
(
Syn: Epithelantha micromeris ssp. pachyrhiza)

CACTUS ART
NURSERY

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Epithelantha pachyrhiza SB325 Higueras, Coahuila, Mexico
Flowers are pink and inconspicuous, just distal portion visible, as they barely stick out above the wool.
 

Description: E. pachyrhiza is a slow growing rare miniature species, erect to prostrate usually unbranched [or rarely branched], not deep-seated in substrate.
Stem: Thin-necked, spinning top shaped only partially covered with spines. It grows to about 10 cm tall and elongates with age.
Spines: White to pale orange-tan or bluish-tan, that are smaller than in
E. micromeris.
Roots: The roots are distinctly tuberous to carrot-like.
Flowers: Pinkish-white .
 

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        Apex of the old specimens with a flowers almost


completely concealed among wool.                                  

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Flowers


Fruits

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Family: Cactaceae (Cactus Family)

Scientific name: Epithelantha micromeris subsp. pachyrhiza (Backeb.) N.P.Taylor 1998 

Origin:   Strictly endemic species found on a very small area on the Southeast and Northeast of Saltillo, Coahuila, Northern Mexico.

Conservation status: Listed in CITES appendix 2.

Synonyms:  Taxon synonyms

  • Epithelantha micromeris ssp. pachyrhiza (W.T.Marshall) N.P.Taylor
  • Epithelantha pachyrhiza Backeb. 1954
  • Epithelantha micromeris var. pachyrhiza


Stems thin-necked, spinning top shaped, with fat tuberous roots.
 

 

 


New spines in sub-adult plants are of an unusual blue-tan or orange-tan colour.


This long known specie is still rare in the trade, but definitely one of the the most interesting and beautiful of the genus.

 

Cultivation: Although regarded as a choice and difficult plant, in cultivation it is relatively easy, but very slow growing.. These plants need very coarse potting soil that drains well (rot prone).
Frost Tolerance: Depending on the variety, it will take
-5 C (or less) (Temperature Zone: USDA
8-11)
Sun Exposure: It requires strong sun to part sun to develop good spinal growth,
but some summer shade in the hottest hours of the day is beneficial. Assure a good ventilation.
 Waterings should be rather infrequent, to keep the plant compact and not become excessively elongated or unnatural in appearance. If the plant becomes to much tall it will lean on a side because the thin neck cannot support the weight of the stem, to keep the plant erect one could either repot it into a deeper pot and bury part of the neck in gravel to give it some support or one could place a couple of nice stones/rocks either side of it to support it. The only trouble with burying the neck with white spined plants like Epithelantha is that the neck can act like a wick when you water and cause brown staining to the plant, watering from the bottom reduces this somewhat.

Propagation: It can be reproduced both by seeds and cuttings, but it is often grafted because difficult and slow to grow on its own roots. Older specimens shoot tillers from under tubercles, so they can be grafted, which is a much easier way of propagation than sowing. Young seedlings are tiny and they need several years to reach adult size, and require careful watering.

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

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