Rumex britannica Linnaeus. Great Water Dock. Phen: Apr-Jun; Jun-Aug. Hab: Marshes. Dist: NL west to NU, south to s. NJ, PA, KY, IL, IA, NE. The specimen reported for VA as R. orbiculatus Gray (R. britannica of FNA) in Castanea 42:261 (1977) has subsequently been annotated to R. obtusifolius; no valid collections of R. britannica are known for VA.

Origin/Endemic status: Native

Synonymy: = FNA5, Il, K3, K4, NE, Pa; > Rumex orbiculatus A.Gray – C, F, G, Mi, W; > Rumex orbiculatus var. borealis; > Rumex orbiculatus A.Gray var. orbiculatus – K1

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