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

Juncus oxymeris Engelm.
pointed rush
Juncaceae (Rush family)

Introduction to Vascular Plants

© Daniel Stewart  Email the photographer   (Photo ID #74572)

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Distribution of Juncus oxymeris
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Species Information

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General:
Perennial herb from long rhizomes; stems erect, 40-90 cm tall.
Leaves:
Located on the lower halves of the stem, 2-6 mm wide, strongly flattened, compressed laterally (iris-like), with partial cross-walls that run from the edge to about 2/3 of the leaf width; sheaths open, with minute, pointed, ear-shaped lobes.
Flowers:
Inflorescence terminal, loose, with 10 to 70 heads, the heads mostly 3- to 12-flowered; perianth segments greenish-yellow to pale brown, 3-4 mm long, pointed, short-awned, subequal; stamens 6; anthers 1-1.5 mm long, slightly longer than the filaments; involucral bract much shorter than the inflorescence.
Fruits:
Capsules, egg-shaped, tapering into long points, longer than the perianth segments; seeds ellipsoid, about 0.5 mm long, lacking tail-like appendages.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Wet meadows and riverbanks in the lowland zone; rare in SW BC; S to CA.

Source: The Illustrated Flora of British Columbia

Climate

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.

Taxonomic and Nomenclatural Links

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General References