mammillaria(redirected from Haagea)
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any flowering cactus of the genus Mammillaria
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|Noun||1.||mammillaria - any cactus of the genus Mammillaria|
cactus - any succulent plant of the family Cactaceae native chiefly to arid regions of the New World and usually having spines
genus Mammillaria - large genus of cacti characterized chiefly by nipple-shaped protuberances or tubercles on their surface