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

Juncus torreyi Coville
Torrey's rush
Juncaceae (Rush family)

Introduction to Vascular Plants

© Bob Thacker  Email the photographer   (Photo ID #81040)

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Distribution of Juncus torreyi
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Species Information

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Perennial herb from elongated rhizomes, the rhizomes swollen at the nodes; stems arising singly, erect, 40-85 cm tall.
Located on the lower part of the stem, nearly circular in cross-section, tapered, the early leaves stiff, with prominent complete cross-walls; sheaths open with short, rounded, ear-shaped lobes.
Inflorescence terminal, congested, of 3- to many-flowered, globe-shaped heads that are 1-1.5 cm wide when pressed; perianth segments greenish-brown to tawny, 4.5-5 mm long, pointed, the inner slightly shorter than the outer; stamens 6; anthers 0.7-1 mm long, shorter than the filaments; involucral bracts usually exceeding the inflorescence.
Capsules, narrowly three-angled, conical, tapered into long tips, about as long as the perianth segments or slightly longer; seeds barrel-like, about 0.4 mm long, lacking tail-like appendages.

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

Moist riverbanks and lakeshores in the steppe zone; infrequent in S BC east of the Coast-Cascade Mountains; E to PQ and NS and S to ME, MA, PA, NC, GA, MS, TX, NM, AZ and CA.

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.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References