Luzula arctica |
Luzula multiflora |
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arctic wood rush |
common wood-rush, many-flower wood-rush |
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Culms | densely cespitose, 5-20 cm. |
densely to loosely cespitose, 10–40 cm. |
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Leaves | sheaths brown to straw-colored; basal leaves to 10 cm × 4 mm; cauline leaves usually 2, reduced. |
basal leaves 3.5–12 cm × 2–6 mm; cauline leaves equaling or exceeding inflorescences. |
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Inflorescences | glomerules 1-3, sessile; proximal inflorescence bract inconspicuous, brown, much shorter to ± equaling inflorescence, apex often clear, dentate; bracts deep brown, margins dentate; bracteoles deep brown, margins dentate. |
glomerules 3–16 (each with 8–16 flowers), 1–2 nearly sessile with others on evident peduncles, mostly cylindric; secondary branches sometimes present, usually straight, erect; proximal inflorescence bract barely as long as to exceeding inflorescence. |
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Flowers | tepals deep brown with narrow clear margins and apex, 1.7-2.1 mm; anthers ± equaling filament length. |
tepals pale brown to chestnut brown to blackish with clear margins, 2–4 mm; outer and inner whorl ± equal, or outer whorl slightly longer (outer whorl pointed, inner whorl pointed or truncate-mucronate); anthers not more than 2 times filament length; stigmas 0.8–1.5 mm; styles not persistent in fruit. |
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Capsules | dark reddish to blackish, shining, spheric, 1.8-2.1 mm, usually exceeding tepals. |
pale to brown to black, globose, shorter than to ± equaling tepals. |
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Seeds | translucent, clear brown, broadly elliptic, with few entangled hairs, 1-1.2 mm. |
1.1–1.7 mm; caruncles 0.2–0.6 mm. |
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2n | = 24. |
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Luzula arctica |
Luzula multiflora |
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Phenology | Flowering and fruiting summer. | |||||||||
Habitat | Wet, stony places on slopes and in dwarf shrub heaths in alpine and arctic tundra; circumpolar. | |||||||||
Elevation | 0-1200 m (0-3900 ft) | |||||||||
Distribution |
AK; BC; LB; MB; NT; NU; QC; YT; Greenland; Eurasia |
AK; CT; DC; DE; GA; IA; ID; IL; IN; KY; MA; MD; ME; MI; MN; MO; MT; NC; NH; NJ; NY; OH; OR; PA; RI; SD; TN; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NL; NS; NT; NU; ON; PE; QC; SK; YT; Eurasia
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Discussion | Many names have been applied to members of this variable complex throughout the range of this flora. No monograph is yet available to enable a satisfactory treatment. Subspecies 6 (3 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 22, p. 263. | FNA vol. 22. | ||||||||
Parent taxa | Juncaceae > Luzula > subg. Luzula | Juncaceae > Luzula > subg. Luzula | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | L. nivalis | Juncus. multiflorus, Juncus. campestris var. multiflorus | ||||||||
Name authority | Blytt: in M. N. Blytt and A. G. Blytt, Norges Flora 1: 299. (1861) | (Ehrhart) Lejeune: Flore des Environs de Spa 1: 169. (1811) | ||||||||
Web links |
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