Luzula wahlenbergii |
Luzula arcuata |
|
---|---|---|
Wahlenberg's wood rush |
bitterroot, curved wood-rush |
|
Rhizomes | short. |
|
Culms | cespitose, 15–30(–35) cm. |
|
Leaves | 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. |
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Inflorescences | 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. |
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Flowers | 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 | dark brown, less than 2.5 mm, slightly longer than tepals; beak absent. |
|
Seeds | dark reddish brown, cylindric, 1.2–1.6 mm; caruncle essentially absent. |
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2n | = 24. |
|
Luzula wahlenbergii |
Luzula arcuata |
|
Phenology | Flowering and fruiting late summer. | |
Habitat | Wet mossy arctic and alpine tundra, lake shores, alluvial rivers, shores of alpine creeks, gneissic seashores | |
Elevation | 40–600 m (100–2000 ft) | |
Distribution |
AK; BC; MB; NT; NU; QC; YT; Greenland; Eurasia |
AK; MT; WA; AB; BC; NT; YT; Eurasia
|
Discussion | Subspecies. 2 (1 in the flora). (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 | ||
Subordinate taxa | ||
Synonyms | Juncus arcuatus | |
Name authority | Ruprecht: Fl. Samojed. Cisural. 58. (1845) | (Wahlenberg) Swartz: Summa Veg. Scand. 13. (1814) |
Web links |