mammillaria old lady

Mammillaria hahniana, native to Mexico, inhabits limestone rocky slopes at 1500-2000 m elevation. It is a polycarpic species with globose stems up to 12 cm diameter. Notably, it features dense white spines reaching 3 cm, producing a distinctive woolly appearance uncommon in the genus. Globose stems 8-12 cm, radial spines white 15-25 mm densely rosetted. Central spines longer, rigid, up to 30 mm. Spine coloration white-grayish, minimal seasonal variation.