Luzula wahlenbergii |
Luzula hitchcockii |
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Wahlenberg's wood rush |
Hitchcock's smooth woodrush, Hitchcock's wood-rush, smooth woodrush |
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Rhizomes | short. |
short to long-running, thick. |
Culms | cespitose, 15–30(–35) cm. |
cespitose, 15–50 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. |
basal blade flat, apex involute?? revolute??, mostly glabrous; cauline leaves 3–5, 2–6 cm × 3–10 mm. |
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. |
anthelate; branches spreading less than 90°, lax; proximal bracts much shorter than inflorescence; bracts brownish, clear toward apex, margins lacerate; bracteoles light brown, 1/2 length of tepals, margins dentate. |
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. |
solitary or in pairs; tepals reddish to dark brown, nearly equal, 2.5–3.5 mm, apex acute, not reflexed; anthers 3 times filament length; stigmas 2 times style length. |
Capsules | dark brown, less than 2.5 mm, slightly longer than tepals; beak absent. |
blackish, ovoid, 2.5–3.5 mm; beak to 1 mm. |
Seeds | dark reddish brown, cylindric, 1.2–1.6 mm; caruncle essentially absent. |
dark brown, 1.2–1.8 mm; caruncle barely visible. |
2n | = 24. |
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Luzula wahlenbergii |
Luzula hitchcockii |
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Phenology | Flowering and fruiting late summer. | Flowering and fruiting summer. |
Habitat | Wet mossy arctic and alpine tundra, lake shores, alluvial rivers, shores of alpine creeks, gneissic seashores | Montane forest to subalpine and alpine slopes, ridges, and meadows |
Elevation | 40–600 m (100–2000 ft) | 1700–2400 m (5600–7900 ft) |
Distribution |
AK; BC; MB; NT; NU; QC; YT; Greenland; Eurasia |
ID; MT; OR; WA; AB; BC
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Discussion | Although Luzula hitchcockii has been reported from California, no convincing specimens have been seen by this author. The species resembles the European L. glabrata (Hoppe) Desvaux very closely; however, it is readily distinguished from all other North American species. Plants may be heavily infested with Ustilago vuijckii Oudemans. and Beijerinck. complete last names??, which considerably alters their usual appearance. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 22. | FNA vol. 22. |
Parent taxa | Juncaceae > Luzula > subg. Anthelaea | Juncaceae > Luzula > subg. Anthelaea |
Sibling taxa | ||
Name authority | Ruprecht: Fl. Samojed. Cisural. 58. (1845) | Hamet-Ahti: Annales Botanici Fennici 8: 368. (1971) |
Web links |
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