Frailea is a genus of globular to short cylindrical cacti native to Brazil. These species are cleistogamous. They were first classified in the genus Echinocactus. ...
Found on
http://en.wikipedia.org/wiki/Frailea
These small cacti are natives to Brazil. The species belonging to this group are cleistogamous, meaning that their flowers produce seed without even opening. F. castanea forms a spherical, flattened, olive-green to brownish stem only growing 11/4 inches across. It has 10 to 15, almost flat ribs that are centered with a row of close-set, downy areol...
Found on
http://www.encyclo.co.uk/local/10004
No exact match found.
