Flowers: Spikes solitary, terminal, lanceolate or narrowly egg-shaped, 5-23 mm long, light to dark brown or chestnut, several-flowered.
Fruits: Basal scales 1 or 2 (3), empty, the lowest ones nearly encircling the top of the stem; fertile scales mostly 2-4.5 mm long, egg-shaped, nearly sharp-pointed or blunt, reddish-brown or purplish-brown or purplish-black with translucent margins and lighter coloured midribs; perianth bristles 4, sometimes 5 or 6, shortly surpassing the achenes, rarely reduced or lacking, with fine barbs directed backwards; stigmas 2; achenes lens-shaped, yellow to medium brown, finely cellular roughened, spongy, minutely wrinkled, 1.5-2.5 mm long including the well-differentiated tubercles, the tubercles separated from the achenes by constrictions, pyramidal, bulbous, longer than broad, 0.4-0.7 mm long.
Notes: This is a highly variable polyploid complex which has yet to be studied adequately.
Wet meadows, tidal flats, ditches and shorelines in the lowland, steppe and montane zones; common throughout BC; circumpolar, N to AK, YT and NT, E to NF and S to SC, AL, LA, TX, NM, AZ, CA and MX; Greenland, Eurasia.
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2019. 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:
15/10/2019 4:55:55 PM
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