Mammillaria vetula, the thimble cactus, is a species of cactus in the subfamily Cactoideae. It is endemic to the Mexican states of Hidalgo, Guanajuato and Querétaro.
Mammillaria vetula, the thimble cactus, is a species of cactus in the subfamily Cactoideae. It is endemic to the Mexican states of Hidalgo, Guanajuato and Querétaro.
Mammillaria vetula sub. gracils 
Mammillaria vetula sub. gracils cv. Arizona snowcap
