Luzula wahlenbergii |
Luzula echinata |
|
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Wahlenberg's wood rush |
hedgehog wood rush |
|
Rhizomes | short. |
to 1.5 cm or shorter, knotty. |
Culms | cespitose, 15–30(–35) cm. |
loosely cespitose, 15–45 cm, base sometimes swollen. |
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 leaves 4–15 cm × 2–7 mm, margins pilose to sparsely hairy, apex not callous. |
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. |
glomerules 4–15, central glomerules sessile or nearly sessile, broadly conic or globose (often loosely flowered); peduncles straight, divergent by as much as 90°, to 9 cm; proximal inflorescence bract leaflike, not longer than inflorescence; bracts and bracteoles clear, variously cut. |
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. |
tepals greenish to pale or dark brown, usually with clear margins and apex, 2.8–4 mm; anthers ca. 2–5 times filament length; stigmas 2–3 times length of styles. |
Capsules | dark brown, less than 2.5 mm, slightly longer than tepals; beak absent. |
pale to dark brown, obovoid to subglobose, usually shorter than tepals. |
Seeds | dark reddish brown, cylindric, 1.2–1.6 mm; caruncle essentially absent. |
dark brown, globose, 1.2–1.6 mm; caruncle 0.5–0.6 mm. |
2n | = 24. |
= 12. |
Luzula wahlenbergii |
Luzula echinata |
|
Phenology | Flowering and fruiting late summer. | Flowering and fruiting spring–early summer. |
Habitat | Wet mossy arctic and alpine tundra, lake shores, alluvial rivers, shores of alpine creeks, gneissic seashores | Bluffs, wooded slopes, alluvial woods, streamsides, under hardwoods and occasionally in clearings |
Elevation | 40–600 m (100–2000 ft) | 50–800 m (200–2600 ft) |
Distribution |
AK; BC; MB; NT; NU; QC; YT; Greenland; Eurasia |
AL; AR; CT; DC; DE; FL; GA; IA; IL; IN; KY; LA; MA; MD; MO; MS; NC; NJ; NY; OH; OK; PA; SC; TN; TX; VA; WV
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Discussion | Luzula echinata has knotty rhizomes to 1.5 cm; the bases of the culms are sometimes swollen. Flowers are characterized by stigmas that exceed styles by 2–3 times. (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 | ||
Name authority | Ruprecht: Fl. Samojed. Cisural. 58. (1845) | (Small) Hermann: Rhodora 40: 84. (1938) |
Web links |