General: Perennial, aquatic herb from fine, tufted roots; stems up to 130 cm long, strongly compressed, flattened, branched.
Leaves: All submersed, linear, the sides parallel, stiff, olive green, 10-20 cm long, 0.2-0.5 cm wide, unstalked, usually with 7 to 15 veins, attached at the nodes, tapering to pointed tips, the stipules 1.5-3.5 cm long, the margins overlapping, straight, smooth.
Flowers: Inflorescence spikelike, the spikes 1.5-3 cm long, with 5 to 9 whorls of flowers, the stalks thin.
Fruits: Achenes, egg-shaped, 4-5 mm long, 3-3.5 mm wide, the beaks conspicuous, the keels winged.
Lakes in the lowland, steppe and montane zones; frequent in BC east of the Coast-Cascade Mountains, infrequent in coastal BC; N to AK, YT and NT, E to NF and S to ME, MA, NY, VA, OH, IN, IL, IA, NE, WY, UT, ID and CA.
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2017. E-Flora BC:
Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for
Advanced Spatial Analysis, Department of Geography, University of British
Columbia, Vancouver. [Accessed:
25/05/2019 2:44:50 PM
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