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

Juncus dudleyi Wiegand
Dudley's rush
Juncaceae (Rush family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #10717)

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Distribution of Juncus dudleyi
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Species Information

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Perennial, loosely tufted herb from compact rhizomes; stems 1 to 15, erect, 25-100 cm long.
Located on the lower 1/3 of the stem, narrow, flattened, lacking cross-walls; sheaths open, with short, cartilaginous, yellowish or yellowish-brown, glossy, ear-shaped lobes.
Inflorescence terminal, 5-15 cm long, the branches ascending, the flowers each with 2 blunt involucral bracts; perianth segments green, 3-5 mm long, pointed, spreading, the inner about the same length as the outer; stamens 6; anthers 0.6-0.9 mm long, shorter than or almost equal to the filaments.
Capsules, 1-celled, rounded, about the same length as the perianth segments or slightly shorter; seeds egg-shaped, about 0.4-0.6 mm long, lacking tail-like appendages.
This is a member of the J. tenuis complex, whose taxonomy and distribution in British Columbia has not been studied.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry to moist meadows, pastures, roadsides and ditches, mostly on disturbed soil in the steppe and montane zones; infrequent in SC and SE BC; N to AK, YT and NT, E to NF and S to ME, MA, PA, VA, SC, 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.

Synonyms and Alternate Names

Juncus tenuis var. dudleyi (Wiegand) F.J. Herm.
Juncus tenuis var. uniflorus auct. non Farw. p.p.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References