Genus
Revision as of 22:10, 26 April 2007 by Kdanneberger (talk | contribs)
1. groups of closely related species clearly defined from other plants.
These are members of the Genus Thelocactus. Compare the Species from that link and Key to Species on the source page listed below.
Source: http://www.thelocactus.cactus-mall.com/Thelocactus_Files/Thelocactus_Gallery.html