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

Luzula arcuata subsp. unalaschcensis (Wahlenb.) Sw. (Buchenau) Hultén
curved wood-rush (Alaska curved woodrush)
Juncaceae (Rush family)

Introduction to Vascular Plants
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Distribution of Luzula arcuata subsp. unalaschcensis
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Species Information

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Perennial, loosely tufted herb from short rhizomes; stems 10-25 cm tall.
Flat or channeled, sparsely fringed with fine hairs, about 5-15 cm long, 1.5-3 mm wide, gradually tapering to sharp tips; basal sheaths reddish-brown, dull.
Inflorescence open, with 5 to 10, dark to blackish brown, dense clusters of 3 to 6 flowers on long, spreading stalks, the outer clusters on arching stalks; perianth segments brown, 2-3 mm long, narrowly lanceolate, pointed, the inner about the same length as the outer; stamens 6; anthers 0.4-0.6 mm long, about the same length as the filaments; bractlets strongly fringed with coarse hairs, nearly equal or sometimes surpassing the flowers; lower bract poorly developed.
Capsules, ellipsoid, pointed, shorter than the perianth segments; seeds cylindrical to egg-shaped, dark brown, 1-1.2 mm long, with minute appendages, with a few short threads at the base.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry to moist meadows in the subalpine and alpine zones; infrequent throughout BC, except absent in NE BC; amphiberingian, N to AK, YT and NT, E to AB and S to MT and WA; E Asia.

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

Luzula arcuata var. unalaschcensis Buchenau
Luzula unalaschcensis (Buchenau) Satake

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References