Federal Noxious Weed Disseminules of the U.S.  
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Sparganium erectum L.

Fruits

Fruits

Fruits

Fruits with spongy layer mostly removed, exposing stony, ridged endocarp

A, Fruit; B, fruit with spongy exterior removed; C, longitudinal section of fruit showing embryo; D, transection of fruit

drawing by Lynda E. Chandler

Comparison Species

Sparganium eurycarpum Engelm.

Fruits

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