Luzula divaricata |
Luzula comosa |
|
---|---|---|
fork wood rush |
hairy wood rush, Pacific wood-rush |
|
Rhizomes | thick. |
|
Culms | densely cespitose, reddish, 6–30 cm × 2 mm. |
cespitose, 10–40 cm. |
Stolons | absent. |
|
Leaves | 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. |
sheath throats with long, soft, wavy hairs; basal leaves 5–15 cm × 3–7 mm, margins with long, soft, wavy hairs, apex callous. |
Inflorescences | 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. |
umbellate or sessile glomerules, 5–15 × 5–7 mm; glomerules 1–6, spheric to nearly cylindric; branches straight, divergent by as much as 90°, 0.5–5 cm; proximal inflorescence bract conspicuous, shorter than to much longer than inflorescence; bracts clear, margins nearly entire to lacerate; bracteoles clear, margins ciliate, especially in distal half. |
Flowers | 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. |
tepals dark brown to pale with clear margins, 2–5 mm; outer whorl often longer than inner whorl; anthers much exceeding to shorter than filaments. |
Capsules | deep reddish brown, shorter to slightly longer than tepals. |
greenish to dark brown, spheric, equal to or much shorter than tepals. |
Seeds | light brown, 1.2 mm. |
red-brown to brown, cylindric, 1–1.5 mm; caruncle 0.3–0.8 mm. |
2n | = 12, 24. |
|
Luzula divaricata |
Luzula comosa |
|
Phenology | Flowering and fruiting summer. | Flowering and fruiting spring–summer. |
Habitat | Subalpine forest to alpine granitic slopes | Meadows, open woods, coniferous forest |
Elevation | 2100–3700 m (6900–12100 ft) | 50–3200 m (200–10500 ft) |
Distribution |
CA; ID; NV; OR; WA
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AK; CA; CO; ID; MT; NE; NM; OR; SD; UT; WA; WY; AB; BC
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Discussion | The culms of Luzula divaricata are reddish colored. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Sheath throats and margins of the basal leaves of Luzula comosa have long, soft, wavy hairs. The highly variable nature of this species is indicated by the number of names applied to it., including: Luzula campestris var. comosa (E. Meyer) Fernald & Wiegand; L. campestris var. macrantha (S. Watson) Fernald & Wiegand; L. campestris var. columbiana St. John; L. comosa var. congesta (Thuillier) S. Watson; L. comosa var. laxa Buchenau; L. comosa var. macrantha S. Watson; L. comosa var. subsessilis S. Watson; L. intermedia (Thuillier) A. Nelson; L. multiflora ssp. comosa (E. Meyer) Hultén; L. multiflora subsp. congesta (Thuillier) Hylander; L. subsessilis Buchenau. Synonymy?? (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 22. | FNA vol. 22. |
Parent taxa | Juncaceae > Luzula > subg. Anthelaea | Juncaceae > Luzula > subg. Luzula |
Sibling taxa | ||
Synonyms | L. campestris var. comosa, L. campestris var. columbiana, L. campestris var. macrantha, L. comosa var. congesta, L. comosa var. laxa, L. comosa var. macrantha, L. comosa var. subsessilis, L. intermedia, L. multiflora subsp. comosa, L. multiflora subsp. congesta, L. subsessilis | |
Name authority | S. Watson: Proc. Amer. Acad. Arts 14:302. (1879) | E. Meyer: Syn. Luzul. 21. (1823) |
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