http://www.karl-rabsilber.de/Kat ... Tr.%20Hybriden.html
http://www.hybridenforum.com/db/db_namelists.htm
http://www.huntington.org/BotanicalDiv/Schick/catalogindex.html
http://www.tucson-gardener.com/g ... psis%20Gallery.html
http://kaktus-portal.eu/echinoid.phppsis_hybr
http://www.koehres-kaktus.de/shop/advanced_search_result.php?
http://www.kakteen-willi.de/index.php?cat=2
http://www.ebay.de/sch/i.html?_from=R40&_sacat=0&_nkw=trichocereus&rt=nc
http://www.karl-rabsilber.de/