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Wahlenberg's wood rush

Hitchcock's smooth woodrush, Hitchcock's wood-rush, smooth woodrush

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.

Luzula wahlenbergii

Luzula hitchcockii

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
from FNA
AK; BC; MB; NT; NU; QC; YT; Greenland; Eurasia
[BONAP county map]
from FNA
ID; MT; OR; WA; AB; BC
[WildflowerSearch map]
[BONAP county map]
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.)

Source FNA vol. 22. FNA vol. 22.
Parent taxa Juncaceae > Luzula > subg. Anthelaea Juncaceae > Luzula > subg. Anthelaea
Sibling taxa
L. acuminata, L. arctica, L. arcuata, L. bulbosa, L. campestris, L. comosa, L. confusa, L. divaricata, L. echinata, L. groenlandica, L. hitchcockii, L. kjellmaniana, L. luzuloides, L. multiflora, L. orestera, L. pallidula, L. parviflora, L. piperi, L. rufescens, L. spicata, L. subcapitata, L. subcongesta
L. acuminata, L. arctica, L. arcuata, L. bulbosa, L. campestris, L. comosa, L. confusa, L. divaricata, L. echinata, L. groenlandica, L. kjellmaniana, L. luzuloides, L. multiflora, L. orestera, L. pallidula, L. parviflora, L. piperi, L. rufescens, L. spicata, L. subcapitata, L. subcongesta, L. wahlenbergii
Name authority Ruprecht: Fl. Samojed. Cisural. 58. (1845) Hamet-Ahti: Annales Botanici Fennici 8: 368. (1971)
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