Oxypolis rigidior (L.) Raf.
Family: Apiaceae
common water-dropwort,  more...
[Oenanthe ambigua Nutt.,  more]
Oxypolis rigidior image
Derek Anderson  
Etymology: Oxypolis: from oxus, "sharp," and polios for "white;" from the awl-shaped, secondary bracts, and white petals.
Plants: erect, perennial, 2'-4' tall, smooth forb with few branches; stems flattened; roots fibrous or thickened tubers
Leaves: few, the wide base clasping the stem; pinnately-divided with 5-9 long and narrow, mostly stalkless leaflets
Flowers: white, 5-parted; inflorescence a few, 3"-6" wide, stalked, compound umbels with 20 or more spreading, loose, open umbellets; blooms July-Sept.
Fruits: dry, both ends rounded, back very flat with 5 rib-like ridges along each side, splitting into 2 seeds that are 2 times as wide as long fruit drawing
Habitat: wet to moist; swamps, marshes, wet prairies, fens
Conservation Status: Native
Oxypolis rigidior image
Derek Anderson  
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Merel R. Black  
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Robert W. Freckmann  
Oxypolis rigidior image
Robert W. Freckmann  
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Emmet J. Judziewicz  
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Emmet J. Judziewicz  
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Janice Stiefel  
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Aaron_Carlson  
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Oxypolis rigidior image
Aaron_Carlson  
Oxypolis rigidior image
Oxypolis rigidior image
Janice Stiefel  
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Aaron_Carlson  
Oxypolis rigidior image
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