Luzula piperi |
Luzula wahlenbergii |
|
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Piper's wood-rush, smooth woodrush |
Wahlenberg's wood rush |
|
Rhizomes | horizontal, short. |
short. |
Culms | densely cespitose, 10–30(–35) cm. |
cespitose, 15–30(–35) cm. |
Leaves | basal blade green, 5–10 cm × 2–4 mm, firm, essentially glabrous; cauline leaves 2–3, 3–7 cm × 3–5 mm. |
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 | branches spreading less than 90°, lax; proximal inflorescence bract leaflike, 0.8–1.5 cm; bracts and bracteoles brown, clear at apex, margins strongly ciliate. |
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 | single or in clusters of 2–3; tepals dark brown, 1–2.5 mm, ± equal, apex acute, not reflexed; anthers ± equaling filament length; stigmas 5 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 | dark brown, ellipsoid, shorter than 2.5 mm, longer than tepals; beak absent. |
dark brown, less than 2.5 mm, slightly longer than tepals; beak absent. |
Seeds | light yellow-brown, lanceolate, narrowed at ends, 1.2 mm. |
dark reddish brown, cylindric, 1.2–1.6 mm; caruncle essentially absent. |
2n | = 24. |
= 24. |
Luzula piperi |
Luzula wahlenbergii |
|
Phenology | Flowering and fruiting summer. | Flowering and fruiting late summer. |
Habitat | Snowbeds and mesic heaths in subalpine and oceanic zones | Wet mossy arctic and alpine tundra, lake shores, alluvial rivers, shores of alpine creeks, gneissic seashores |
Elevation | 400–2400 m (1300–7900 ft) | 40–600 m (100–2000 ft) |
Distribution |
AK; ID; MT; OR; WA; AB; BC; YT; e Asia
|
AK; BC; MB; NT; NU; QC; YT; Greenland; Eurasia
|
Source | FNA vol. 22. | FNA vol. 22. |
Parent taxa | Juncaceae > Luzula > subg. Anthelaea | Juncaceae > Luzula > subg. Anthelaea |
Sibling taxa | ||
Synonyms | Juncoides piperi, L. wahlenbergii subsp. piperi | |
Name authority | (Coville) M. E. Jones: Bull. Biol. Ser. Bull. State Univ. Montana 15: 22. (1910) | Ruprecht: Fl. Samojed. Cisural. 58. (1845) |
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