マミラリア・バッケベルギアナ (澄心丸) [Index] [Back] メキシコ南西部のゲレロ州とミチョアカン州、メキシコ州に分布しています。標高１４００〜１９００メートルにある砂漠や乾燥した低木地帯に生え、高さは３０センチほど、直径５〜６センチになります。結節は短いピラミッド状で稜はなく、疣腋は裸かわずかな毛が生えます。中棘は１〜３個あり、真っ直ぐな針状で、黄褐色から褐色、長さは７〜８ミリです。縁棘は１０〜１２個あり、黄白色で褐色を帯び、長さ８〜１０ミリです。花は紫がかった赤色で、直径は１０〜１３ミリです。 サボテン科マミラリア属の疣サボテンで、学名は Mammillaria backebergiana。英名は Backeberg's pincushion cactus。 The Backeberg's pincushion cactus (Mammillaria backebergiana) belongs to Cactaceae (the Cactus family). It is an evergreen perennial herbacious plant that is found in the states of Guerrero and Michoacan, as well as in the State of Mexico in southwestern Mexico. It grows in deserts and dry shrublands at elevations of 1400 to 1900 m, reaching a height of about 30 cm and a diameter of 5 to 6 cm. The tubercles are short and pyramidal with no ridges, and the axils are naked or bear sparse hairs. It has 1 to 3 central spines, which are straight and needle-like, yellowish-brown to brown in color, and 7-8 mm long. There are 10 to 12 radial spines, which are yellowish-white with a brownish tinge and 8-10 mm long. The flowers are purplish-red and 10-13 mm in diameter. 宮城県大河原町大谷にて、2026年04月14日撮影。 Shu Suehiro shu@botanic.jp