E-Flora BC: Electronic Atlas of the Flora of British Columbia

Juncus canadensis J. Gay ex Laharpe
Canadian rush
Juncaceae (Rush family)

Introduction to Vascular Plants

© Frank Lomer  Email the photographer   (Photo ID #27575)

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Distribution of Juncus canadensis
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Species Information

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Perennial, tufted herb from short rhizomes; stems numerous, erect, 40-90 cm tall.
Located on the lower part of the stem, nearly circular in cross-section, tapered, stiff, with prominent complete cross-walls; sheaths open, with short, rounded, ear-shaped lobes.
Inflorescence terminal, conic, as wide as long to twice as long as wide, 5-20 cm long, the heads with more than 10 flowers, the branches spreading; perianth segments greenish-brown, 3.5-4.5 mm long, pointed, the inner shorter than the outer; stamens 6; anthers 0.7-1 mm long, shorter than the filaments.
Capsules, pointed, about as long as the perianth segments or only slightly longer; seeds spindle-shaped, about 0.4 mm long, with long, tail-like appendages on both ends that are more than 1/2 of the seed bodies.
This species was erroneously treated as J. brevicaudatus in Ceska (1994).

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Blooming Period:
Mid Summer
Fruit/Seed characteristics:
Colour: Brown
Present from Summer to Fall
Source:  The USDA

Habitat / Range

Wet meadows, peat bogs, lakeshores, and riverbanks in the lowland zone; rare in SW BC; introduced from eastern North America.

Source: The Illustrated Flora of British Columbia


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Juncus canadensis var. euroauster Fernald
Juncus canadensis var. sparsiflorus Fernald

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References