ISI 2011-10. Mammillaria hernandezii Glass & R. A. Foster Out of Stock

In 1992 this gem of a cactus was offered as ISI 92-10. The species is still not as widespread in collections as its appeal warrants except perhaps in the UK, where, according to Pilbeam (in his Cactus File Handbook Mammillaria), it is more amenable to cultivation. It tends to be fairly short-lived unless provided ample drainage and protection from cold and wet during winter to keep its fleshy roots in good health. It is known from only a couple of populations on limestone hills at 2300 m elevation in northern Oaxaca, Mexico. HBG 104733, $7.