Finger cactus (Mammillaria longimamma) spines, Cactaceae. Detail.

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Photo credit: © De Agostini / C. Dani / Alamy / Afripics
License: Licensed
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Keywords: biology, botany, cactaceae, cactus, cactusspines, close, extreme, finger, growth, horizontal, longimamma, mammillaria, nature, people, plant, protection, sharp, spiked