Page authors: Don Knoke, David Giblin
Juncus articulatus ssp. articulatus
jointed rush, jointleaf rush

Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to the Southern Rocky Mountains, Great Plains, Great Lakes region, and northeastern North America.

Habitat: Wet places, from tidelands to streams or lake margins in the mountains.

Flowers: June-August

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Wind


Tufted perennial, the stems clustered on short rhizomes, 15-50 cm. tall.


Leaves alternate, 1-3 per stem, the blades terete, with prominent partitions; leaf bases sheathing, with rounded auricles.


Inflorescence terminal, 2-15 cm. long, exceeding the involucral bract, the branches spreading; heads numerous, small, 6- to 12-flowered; perianth usually deep brown, 2.5-3 mm. long, the 6 segments equal, lanceolate and slightly acuminate; stamens 6.


Capsule brown, longer than the perianth, conic-ovoid, tapered to a short projection.

Accepted Name:
Juncus articulatus L. ssp. articulatus
Publication: Sp. Pl. 1: 327. 1753.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Juncus articulatus ssp. articulatus in the Consortium of Pacific Northwest Herbaria database

WA Flora Checklist: Juncus articulatus ssp. articulatus checklist entry

OregonFlora: Juncus articulatus ssp. articulatus information

E-Flora BC: Juncus articulatus ssp. articulatus atlas page

CalPhotos: Juncus articulatus ssp. articulatus photos

37 photographs:
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