closely related genera like Coryphantha, Ortegocactus and the formerly recognized Neolloydia. Selected species As noted above, some might not belong in this genus. Mammillaria albicoma Mammillaria albiflora Mammillaria albilanata Mammillaria angelensis Mammillaria anniana Mammillaria aureilanata Mammillaria aurihamata Mammillaria backebergiana Mammillaria barbata – green fishhook cactus Mammillaria baumii Mammillaria beneckei Mammillaria berkiana Mammillaria blossfeldiana Mammillaria bocasana Mammillaria bocasana f. multilanata – powder-puff pincushion Mammillaria bocasana ssp. eschauzieri – Eschauzier's pincushion Mammillaria bombycina – silken pincushion Mammillaria boolii Mammillaria brachytrichion Mammillaria brandegeei Mammillaria carmenae Mammillaria carnea Mammillaria celsiana Mammillaria centricirrha Mammillaria columbiana Mammillaria compressa – mother of hundreds Mammillaria crinita – rose pincushion cactus Mammillaria crocidata Mammillaria crucigera Mammillaria decipiens Mammillaria deherdtiana Mammillaria dioica – strawberry cactus, California fishhook cactus Mammillaria discolor Mammillaria dixanthocentron Mammillaria duwei Mammillaria elegans Mammillaria elongata – ladyfinger cactus Mammillaria fraileana Mammillaria gasseriana Mammillaria geminispina – twin-spined cactus Mammillaria geminispina f. cristate – crested twin-spined cactus Mammillaria gigantea Mammillaria glassii Mammillaria glochidiata Mammillaria goodridgei Mammillaria goodridgei var. goodridgei Mammillaria goodridgei var. rectispina Mammillaria grahamii – Arizona fishhook cactus Mammillaria grahamii var. oliviae – Pitahayita Mammillaria grusonii Mammillaria guelzowiana Mammillaria guerreronis Mammillaria guillauminiana Mammillaria haageana Mammillaria hahniana – old lady cactus Mammillaria hernandezii Mammillaria herrerae Mammillaria heyderi Mammillaria huitzilopochtli Mammillaria humboldtii Mammillaria johnstonii Mammillaria karwinskiana – royal cross mammillaria Mammillaria klissingiana Mammillaria kraehenbuehlii Mammillaria krameri Mammillaria lasiacantha – golf-ball pincushion cactus Mammillaria laui Mammillaria lenta Mammillaria longiflora Mammillaria longimamma – finger cactus Mammillaria luethyi Mammillaria magnifica Mammillaria magnimamma – Mexican pincushion Mammillaria mainiae – counterclockwise pincushion Mammillaria mammillaris Mammillaria marcosii Mammillaria marksiana – cabeza de viejo Mammillaria mathildae Mammillaria matudae Mammillaria meiacantha Mammillaria melaleuca Mammillaria melanocentra Mammillaria mercadensis Mammillaria microhelia Mammillaria microthele Mammillaria muehlenpfordtii Mammillaria morganiana Mammillaria multidigitata Mammillaria mystax Mammillaria neopalmeri Mammillaria nivosa – woolly nipple cactus Mammillaria nunezii Mammillaria painteri Mammillaria parkinsonii – owl's eyes Mammillaria pectinifera – conchilinque Mammillaria pennispinosa Mammillaria perbella Mammillaria perezdelarosae Mammillaria petrophila Mammillaria petterssonii Mammillaria plumosa – feather cactus Mammillaria polythele Mammillaria pondii Mammillaria poselgeri Mammillaria pottsii – rattail cactus Mammillaria prolifera – Texas nipple cactus Mammillaria rekoi Mammillaria rettigiana Mammillaria rhodantha – rainbow pincushion Mammillaria saboae Mammillaria sanchez-mejoradae Mammillaria sartorii Mammillaria schiedeana Mammillaria schumannii Mammillaria schwarzii Mammillaria sempervivi Mammillaria senilis - a.k.a. Cochemiea senilis, a.k.a. Mamillopsis senilis, a.k.a. Mamillopsis diguetii, a.k.a. Mammillaria diguetii Mammillaria sheldonii – Sheldon's pincushion Mammillaria sphaerica – longimamma nipple cactus Mammillaria spinosissima – red-headed Irishman Mammillaria spinosissima ssp. pilcayensis – bristle brush cactus Mammillaria standleyi Mammillaria supertexta