This is one of the more exciting mammillaria discoveries described since 1985 but still not as widely cultivated as it deserves. It combines clean, glassy white radial spines with hooked dark-brown centrals. Similar to the related M. bombycina, it differs in its darker centrals and denser, pectinately arranged radials that completely conceal the epidermis, and in its paler pink flowers. Both species are of easy culture and have consistently clean spination whether grown indoors or out. Originally described from eastern Jalisco, Mexico, additional populations have since been located in Aguascalientes just to the north. HBG 76667. $5.