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Notes for the Genus:

Thelocactus

Etymology - From the Greek thele which means "nipple" - making reference to the tubercles.
Thelocactus is comprised of a dozen species that are found primarily in the Chihuahuan desert of Texas and Mexico. The species have feature small globose or short cylindrical stems that are solitary or form small clusters. The stems have ribs that are strongly or entirely tuberculate and are often topped with stout, needle-like spines, which are hooked in some species. Flowers are white, pink, or yellow and often are a combination of colors, either in concentric rings or strips. The flowers are usually large in proportion to the stems and come from the top of the plant. Flowers may also continue during the entire summer.

The manageable size of the plants and the readiness to flower in conjunction with the ease of care make many species in this genus very popular in cultivation.

Click on one of the species below for more info.

Thelocactus bicolor

Thelocactus bicolor


     21 images

Taxa Included:
   T. bicolor schwarzii -
6 images

   T. bicolor flavidispinus -
5 images

   T. bicolor mapimensis -
1 image

   T. bicolor bicolor -
2 images

   T. bicolor bolaensis -
3 images

   T. bicolor schottii -
4 images


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Thelocactus conothelos

Thelocactus conothelos


     14 images

Taxa Included:
   T. conothelos -
9 images

   T. conothelos argenteus -
1 image

   T. conothelos aurantiacus -
3 images

   T. conothelos saussieri -
1 image


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Thelocactus garciae

Thelocactus garciae


     5 images

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Thelocactus hastifer

Thelocactus hastifer


     6 images

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Thelocactus heterochromus

Thelocactus heterochromus


     7 images

Taxa Included:
   T. heterochromus -
4 images

   T. heterochromus longispinus -
3 images


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Thelocactus hexaedrophorus

Thelocactus hexaedrophorus


     10 images

Taxa Included:
   T. hexaedrophorus -
6 images

   T. hexaedrophorus lloydii -
4 images


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Thelocactus lausseri

Thelocactus lausseri


     5 images

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Thelocactus leucacanthus

Thelocactus leucacanthus


     14 images

Taxa Included:
   T. leucacanthus -
5 images

   T. leucacanthus schmollii -
8 images

   T. leucacanthus Rio Moctezuma -
1 image


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Thelocactus macdowellii

Thelocactus macdowellii


     5 images

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Thelocactus multicephalus

Thelocactus multicephalus


     2 images

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*Currently 12 of 12 known species in this genus are represented on CactiGuide.com.
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