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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
from FNA
AK; ID; MT; OR; WA; AB; BC; YT; e Asia
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; BC; MB; NT; NU; QC; YT; Greenland; Eurasia
[WildflowerSearch map]
[BONAP county map]
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. rufescens, L. spicata, L. subcapitata, L. subcongesta, L. wahlenbergii
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
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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