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| chiefly tropical trees or shrubs or herbs having milky juice and often showy flowers; chiefly tropical trees or shrubs or herbs having milky juice and often showy flowers; many are sources of drugs ❲Apocynaceae❳ | |||
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| any of several poisonous perennial plants of the genus Apocynum having acrid milky juice and bell-shaped white or pink flowers and a very bitter root |