목단옥(牡丹玉) Gymnocalycium mihanovichii var. friedrichii

   
                목단옥(牡丹玉)                                    목단옥 철화                         여사환(麗蛇丸) G. damsii

 
                     구문룡(九紋龍) Gymnocalycium gibbosum

 
                                                                   홍성

 
                  공룡환(恐龍丸), 종귀환(鐘鬼丸) Gymnocalycium monvillei ssp. horridispinum

 
                                                  다화옥(多花玉) Gymnocalycium multiflorum

   
         맹취옥(猛鷲玉) G.nidulans                   Gymnocalycium sp.                           Gymnocalycium sp.