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Tridax procumbens L.

Achenes

Achene, detail

Apex (left) and basal scar (right) of achene

A, Achene; B, achene with entire pappus; C, longitudinal section of achene showing embryo; D, transection of achene

drawing by Lynda E. Chandler

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Haplopappus tenuisectus (Greene) Blake

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Haplopappus venetus (H.B.K.) Blake ssp. furfuraceus (Greene) Hall

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