Gymnocalycium monvillei and its variations

    Gymnocalycium monvillei

    Gymnocalycium monvillei v. steineri

Gymnocalycium schroederianum and its variations

    Gymnocalycium schroederianum subsp. paucicostatum

Gymnocalycium pflanzii and its variations

    Gymnocalycium pflanzii subsp. dorisiae

    Gymnocalycium pflanzii subsp. pflanzii var. paraguayense

Gymnocalycium kieslingii and its shape

    Gymnocalycium kieslingii fa. castaneum