裸萼球属(Gymnocalycium)为一类原产南美大陆的球形仙人掌类。它们肉质较坚硬,习性强健,对水、肥、温度和光线的要求都不太高,冬季休眠,春至秋生长,很适合我国的气候。除少数种外,球体都不大且易开花,特别适宜家庭栽培。本属约100种,另还有几十个变种。园艺变异类型如绯牡丹、绯牡丹锦、火星锦等,爱好者们也很熟悉。在球形仙人掌类中是仅次于乳突球属的大家族。园艺上为区别种类和栽培的方 Gymnocalycium (Gymnocalycium) for a class of native South American continent spherical cactus. They are harder in flesh and healthy in their habits. They do not require too much water, fertilizer, temperature and light, they sleep in winter and grow in spring and autumn, which is very suitable for our climate. Except for a few species, the sphere is not large and easy to bloom, especially suitable for family cultivation. This is about 100 species, and the other there are dozens of variants. Horticulture variation types such as Fei Peony, Fei Peony Jin, Mars Kam, etc., fans are also very familiar. In the spherical cactus category is second only to the genus Milkman family. Horticulture for the difference between the type and cultivation of the party