Cyril Ruoso / Cactus (Mammillaria longimamma) south Texas, USA, April.
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Chris Mattison / (Mammillaria / Mamilopsis senilis) flower bud pushing through spines, originally from Central Mexico
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Chris Mattison / Cultivated Old lady cactus (Mammillaria hahniana) flower.
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Adrian Davies / Cacti (Mammillaria varieaculeata) in flower in a botanical garden, native to Mexico, Surrey, England, UK, May.
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Claudio Contreras / Fishhook cactus (Mammillaria poselgeri) with San Jose Island beyond. El Pardito Island, Islands of Gulf of California Protected Area, Sea of Cortez, Mexico. May.
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Jeff Foott / Strawberry cactus (Mammillaria dioica) flowering. Central Baja California, Mexico. March.
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Jeff Foott / Strawberry cactus (Mammillaria dioica) flowering, Central Baja California, Mexico. March.
