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Escobaria tuberculosa
(Syn: Escobaria dasyacantha var. varicolor)

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E. tuberculosa (SB79 Jimenez, Chihuahua, Mexico)


Description: Branched and small stemmed (to 50 branches) but sometimes solitary and large stemmed. Stems ovoid to cylindric up to 12 (18) cm tall, 7 cm in diameter. Tubercles are more or less regularly arranged in spirals, and firm; areolar glands are absent. Spines 21-41 per areole, ashy white, grey, or pale tan in colour, with the tips of the largest spines reddish brown or reddish black, all straight. Radial spines numerous (15-41 per areole), 4-15 mm long, grey to white, sometimes as many as 30. Central spines several, stouter than radials, brown to blackish or colored only at tips
The flowers are apical or nearly so, pure white, pale rose-pink, or pale lavender-pink, darker centrally, 2.5 to 4 cm in diameter. The fruit is oblong, bright red not very succulent; the floral remnant is strongly persistent.


 

Photo of conspecific taxa, varieties, forms and cultivars of plants belonging to the Escobaria tubercolsa 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

Cultivation: Easy to cultivate in a very gritty substrate with much drainage. Water regularly in summer, but do not overwater (very rot prone), it prefer a completely dry place during winter . An unheated greenhoouse would be perfect. It can survive low temperatures (appr. -12 C). Full sun to light shade.

Propagation: Seeds (no dormancy requirement, they germinate best at  25°C in spring ) or usually by offsets (readily available), or occasionally grafted.


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Family: Cactaceae (Cactus Family)

Conservation status: Listed in CITES appendix 2

Scientific name:  Escobaria tuberculosa (Engelm.) Britton & Rose
Cact. 4: 54, fig. 51. 1923. Mammillaria tuberculosa Engelm., Proc. Amer. Acad. Arts and Sci. 3: 268. 1856.


Type locality: LT - Mexico: Chihuahua: Flounce Mountains, below El Paso, below San Elisario on the Río Grande.

Type specimen: LT: MO. Bigelow s.n., Jun 1852. The LT was designated by Benson, Cact. U.S. Canada 962 (1982), but specific sheet is not indicated.

Common English NameCob corycactus, Incense Corycactus, white column foxtail cactus, white-column foxtail cactus

Origin: Southeastern Arizona, southern New Mexico and Trans-Pecos Texas south into northern Mexico (Coahuila, Chihuahua, and Durango).
 

Synonyms
  • Coryphantha dasyacantha var. varicolor (Tiegel) L.Benson
  • Coryphantha strobiliformis auct. non (Poselg.) Orcutt [misapplied]
  • Coryphantha dasyacantha var. varicolor (Tiegel) L. Benson
  • Coryphantha strobiliformis auct. non (Poselg.) Orcutt
  • Coryphantha tuberculosa Marshall
  • Escobaria dasyacantha var. varicolor (Tiegel) D.R. Hunt
  • Escobaria strobiliformis auct. non (Poselg.) Scheer ex Bödecker [misapplied]
  • Escobaria tuberculosa var. varicolor (Tiegel) Brack & Heil
  • Escobaria dasyacantha var. varicolor (Tiegel) D.R. Hunt
  • Mammillaria tuberculosa Engelm
  • Mammillaria varicolor (Tiegel) Weniger
  • Mammillaria tuberculosa Engelm.
  • Cactus tuberculosa Kuntz
  • Cactus strobiliformis Kuntz
 


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

Photo gallery ESCOBARIA

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.