Luzula acuminata |
Luzula divaricata |
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hairy wood rush |
fork wood rush |
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Rhizomes | similar to stolons. |
thick. |
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Culms | loosely cespitose, 10–40 cm × width3–5 mm. |
densely cespitose, reddish, 6–30 cm × 2 mm. |
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Stolons | to 6 cm, scale leaves present. |
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Leaves | sheaths reddish, throat pilose; blade sparsely pubescent; basal leaves 32 cm × 12 mm; cauline leaves 2–4, 2–4 cm × 2–5 mm. |
basal leaves numerous, blade to 20 cm × 4–6 mm, sometimes longer than stem, apex long-pointed to 12 mm, mostly glabrous; cauline leaves 2–3. |
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Inflorescences | cymose, not rarely branching or often branching to 6 cm; proximal inflorescence bract 1/2–2/3 inflorescence length; bracts straw-colored, apex truncate, lacerate, glabrous or pubescent; bracteoles lance-ovate, 1/3–1/2 tepal length; pedicels single or paired, erect to spreading, 1–4 cm. |
5–15 cm, width 1/2 to equaling length; branches widely spreading to 90°, stiff, not drooping; proximal bract inconspicuous, less than 2 cm; bracts and bracteoles clear, margins slightly lacerate, often with a few cilia. |
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Flowers | tepals pale to dark brown, 3–4.5 mm, margins entire, clear; anthers 2 times filament length; stigmas ± equaling style length. |
solitary; tepals pale brown with reddish tint, 1.8–2.4 mm, apex reflexed, long-acuminate; outer whorl slightly longer than inner whorl; anthers ± equaling filaments; stigmas 3 times style length. |
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Capsules | green to straw-colored, exceeding tepals; beak a mucro; valves widely spreading upon splitting. |
deep reddish brown, shorter to slightly longer than tepals. |
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Seeds | reddish to brown, 1–1.5 mm; caruncle curved, ± equaling length of seed body. |
light brown, 1.2 mm. |
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2n | = 48. |
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Luzula acuminata |
Luzula divaricata |
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Phenology | Flowering and fruiting summer. | |||||
Habitat | Subalpine forest to alpine granitic slopes | |||||
Elevation | 2100–3700 m (6900–12100 ft) | |||||
Distribution |
CA; ID; NV; OR; WA
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
The culms of Luzula divaricata are reddish colored. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 22, p. 256. | FNA vol. 22. | ||||
Parent taxa | Juncaceae > Luzula > subg. Pterodes | Juncaceae > Luzula > subg. Anthelaea | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | Rafinesque: Autikon Botanikon 3: 193. (1840) | S. Watson: Proc. Amer. Acad. Arts 14:302. (1879) | ||||
Web links |