General: Perennial, aquatic herb from strong rhizomes; stems mostly unbranched or sparingly branched, with a reddish tinge, nearly circular in cross-section, tapered, up to 200 cm long.
Leaves: Submersed leaves flat, thin, linear-lanceolate, 4-10 cm long, 5-20 mm wide, with 7 to 9 veins, unstalked, not clasping the stem, the stipules 1.5-2.5 cm long, thin, membranous, persistent; floating leaves, if developed, lanceolate, 3-8 cm long, 2-5 cm wide, gradually tapered into stalks.
Flowers: Inflorescence spikelike, the spikes 1-3.5 mm long, with 5 to 10 whorls of flowers, the stalks thick.
Fruits: Achenes, egg-shaped, 3-3.5 mm long, 2-2.4 mm wide, slightly compressed at their sides, the beaks long, often curved, the dorsal keels narrow, prominent, the lateral keels obscure.
Notes: Stem anatomical characters Interlacunar and subepidermal bundles lacking, pseudohypodermis lacking, endodermis of O-cells.
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:
2020-06-03 6:34:50 AM
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