General: Perennial, aquatic herb from fine, tufted roots; stems up to 100 cm long, sparsely branched.
Leaves: All submersed, linear, the sides parallel, rigid, light to olive-green, 2.5-7 cm long, 1.2-3.5 mm wide, usually with 5 to 7 veins and narrow translucent bands (1 or 2 cells wide) along the midveins, blunt or rounded and slightly abruptly slender-tipped, the tips pointed, the stipules 0.5-2 cm long, coarsely fibrous, whitish, the tips shredding, the margins overlapping, basal glands present.
Flowers: Inflorescence spikelike, the spikes 0.5-1.5 cm long, with 2 to 5 whorls of flowers, the stalks thin; winter buds fan-shaped, the bases hard, strongly ribbed.
Fruits: Achenes, egg-shaped, 1.5-2.5 mm long, 1.2-2 mm wide, widest above the middle, the beaks short, the keels low and rounded.
Lakes, ponds and ditches in the lowland, steppe and montane zones; frequent in BC east of the Coast-Cascade Mountains, infrequent in coastal BC; circumpolar, N to AK, YT and NT, E to NF and S to ME, MA, PA, OH, IN, IL, IA, NE, WY, UT, ID, and WA; Eurasia.
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2020. 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:
2020-10-26 4:07:45 AM
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