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.

  Thelocactus bicolor "INERMIS" CACTUS ART
NURSERY

Cultivation and Mail Sale
of Cacti and Succulents.

 


Spineless  cultivar  with  flamboyant  jagged  flowers.

 

Photo of conspecific taxa, varieties, forms and of plants belonging to the Thelocactus bicolor complex (This Taxon has lots of synonyms ( like many other cacti) 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):
 

  • T. bicolor var. bicolor (Frost hardiness -7C )
  • T. bicolor var. bolaensis (Frost hardiness -12C ) Origin: Coahuilafrom Sierra Bola, up to 20 cm tall.
  • T. bicolor var. commodus  It has been described as having only one, porrect, central spine, but with a careful observation it is possible to notice that the upper central spines are so appressed to the stem that they can be easily mistaken for radials.
  • T. bicolor var. ellipticus is referable to bicolor.
  • T. bicolor var. flavidispinus (Frost hardiness -12C ) Texas 8cm in diameter, 5cm tall.
  • T. bicolor var. heterochromus
  • T. bicolor var. pottsii (Referable to bicolor var. heterochromus).
  • T. bicolor var. rhodophthalmus is referable to bicolor.
  • T. bicolor var. schottii (Frost hardiness -12C) coming from the Big Bend area Texas, Chihuahua) characterized by a very long, papery upper spine.
  • T. bicolor var. schwarzii 1 0 F (-12C) Tamaulipas
  • T. bicolor var.  texensis is an invalid name for a Texas form.
  • T. bicolor var. tricolor (Frost hardiness -7C ) A form with bright red spines. Plants with these characters can be found around Saltillo, Coahuila.
  • T. bicolor var. zwakii,  It is not sufficiently distinct to deserve a subspecies rank.

Cultivars: Thelocactus bicolor cv. INERMIS

 

Propagation: Graft or (rarely) cuttings if available. The cutting should not be disturbed until they are well rooted after which they can be planted separately in small pots.

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

Photo gallery Thelocactus


Advertising



 

Family: Cactaceae (Cactus Family)
Scientific name: Thelocactus bicolor ssp. bicolor (Galeotti ex Pfeiffer) Britton & Rose cv. INERMIS

Origin Garden origin (Nursery produced cultivar)

Conservation status: Listed in CITES appendix 2.


 

 
 


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

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.