gymnocalycium uruguayense - green cactus with spines pressed to the body in a botanical collection

gymnocalycium thorn stone areole spike succulent plants uruguayense caryophyllales cactaceae uruguay brazil cultivate succulents nature cactus cacti eudicots cactoideae cacteae wildlife flora plant desert spines arid world natural vegetation hot dry spine prickly pear hardy green floral botany monvillei