General: Perennial herb from long, creeping rhizomes or stolons; stems erect, 10-35 cm tall.
Leaves: Located on the lower parts of the stem, flat, lacking cross-walls.
Flowers: Inflorescence of 1 to 3, dark, long-stalked, terminal heads of 3 to 10 flowers; perianth segments chestnut-brown, 3.5-6.5 mm long, egg-shaped, the outer segments equal to the inner ones or slightly longer, pointed, the inner segments blunt; stamens 6; anthers 1-1.5 mm long, shorter than the filaments; lowest bracts leaflike, about as long as the inflorescence, the upper bracts awnlike and shorter than the flowers.
Fruits: Capsules, pointed, 1.5 times longer than the perianth segments, dark chestnut brown; seeds spindle-shaped, about 0.9 mm long, with tail-like appendages at each end.
Notes: Two subspecies have been recognized in W North America. Juncus castaneus ssp. leucochlamys has not been reported from BC, but can be expected near the YT border:
1. Heads 1 to 3, dark, unstalked or short-stalked; lowest bract short................... ssp. Castaneus
Moist to wet gravel bars, bogs, fens, lakeshores and marshes in the montane and subalpine zones; frequent in BC north of 55degreeN, E of the Coast Mountains and in the Rocky Mountains; circumpolar, N to AK, YT and NT, E to NF and S to NM; 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:
25/08/2019 6:10:09 PM
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