Luzula divaricata |
Luzula wahlenbergii |
|
---|---|---|
fork wood rush |
Wahlenberg's wood rush |
|
Rhizomes | thick. |
short. |
Culms | densely cespitose, reddish, 6–30 cm × 2 mm. |
cespitose, 15–30(–35) cm. |
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 throat acutely angled, pilose; basal leaf blade 5–10 cm × 3–8 mm, apex short acuminate, mostly glabrous; cauline leaves (1–)2–4, 3–5 cm × 2–4 mm. |
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. |
anthelate, few flowered; main branches generally 2–4, spreading less than 90°, lax, usually arching; proximal inflorescence bract 1 cm or less; bracts and bracteoles brown; margins with long curly cilia. |
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. |
solitary on short pedicels; tepals dark purplish brown (margins finely lacerate toward apex), 2–2.5 mm, margins finely lacerate toward apex, apex acute, not reflexed; anthers ± equaling filament length; stigmas 2 times style length. |
Capsules | deep reddish brown, shorter to slightly longer than tepals. |
dark brown, less than 2.5 mm, slightly longer than tepals; beak absent. |
Seeds | light brown, 1.2 mm. |
dark reddish brown, cylindric, 1.2–1.6 mm; caruncle essentially absent. |
2n | = 24. |
|
Luzula divaricata |
Luzula wahlenbergii |
|
Phenology | Flowering and fruiting summer. | Flowering and fruiting late summer. |
Habitat | Subalpine forest to alpine granitic slopes | Wet mossy arctic and alpine tundra, lake shores, alluvial rivers, shores of alpine creeks, gneissic seashores |
Elevation | 2100–3700 m (6900–12100 ft) | 40–600 m (100–2000 ft) |
Distribution |
CA; ID; NV; OR; WA
|
AK; BC; MB; NT; NU; QC; YT; Greenland; Eurasia |
Discussion | The culms of Luzula divaricata are reddish colored. (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. Anthelaea |
Sibling taxa | ||
Name authority | S. Watson: Proc. Amer. Acad. Arts 14:302. (1879) | Ruprecht: Fl. Samojed. Cisural. 58. (1845) |
Web links |