xx Mammillaria flavescens (DC.) Pfeiff. [ Mammillaria nivosa Link ex Pfeiff.]
no HD illustration available (m1)
xx Mammillaria flavescens (DC.) Pfeiff. [ Mammillaria nivosa Link ex Pfeiff.] [Cactaceae]
K.M. Schumann, M Gürke, F. Vaupel, Bl. Kakt., vol. 3 : t. 165 (1910) [J. Pohl]