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history of the genus Gymnocalycium
habitat of the genus Gymnocalycium
structure of the genus Gymnocalycium according to Schütz
etymology of the genus Gymnocalycium
field numbers of the genus Gymnocalycium
literature about the genus Gymnocalycium
Gymnocalycium in habitat
premier descriptions from 1990 to 1999
one selected picture of the month
the picture gallery
short descriptions of single Gymnos
other cacti in habitat
links on interesting pages