Rumex britannica L.  
Family: Polygonaceae
British dock, greater water dock
[Rumex acutus auct., non L. (pro sp.), Rumex britannica var. borealis L., Rumex orbiculatus A.Gray]
Rumex britannica image
Kenneth J. Sytsma  
Etymology: Rumex: the ancient Latin name for the docks or sorrels
Plants: erect, perennial, up to 8' tall, stout forb; stems unbranched to the inflorescence
Leaves: mostly flat, lance-like, large, 6" long
Flowers: yellow, 6-parted, stalk with a vague joint near the base when mature; inflorescence up to 20" long, branched cluster often with small leaves at the base of the branches
Fruits: red/brown
Habitat: swamps, shallows
Rumex britannica image
Emmet J. Judziewicz  
Rumex britannica image
Merel R. Black  
Rumex britannica image
Rumex britannica image
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