Luzula confusa

Lindeberg

Bot. Not. 1855: 9. 1856.

Common names: Northern wood rush
Illustrated
Treatment appears in FNA Volume 22.

Rhizomes 0.5–1 cm. Culms cespitose, stiffly erect, 3–28 cm. Leaves: sheaths reddish; basal leaves (persisting for several seasons,) reddish, exceeding inflorescence to as short as cauline leaves, glabrous; cauline leaves 2–3, reddish, rarely to 6 cm, often reaching or exceeding inflorescence, glabrous. Inflorescences: glomerules 1–4, pedunculate; main branches 1–3 (–4), arching in 1 direction, 1–4 cm, terminated by 2–several peduncles each bearing 1–5 flowers; peduncles 2 mm;; proximal inflorescence bract usually inconspicuous, though variable in size and shape; bracts and bracteoles conspicuous, clear to deep brown, margins lacerate to fimbriate to abundantly ciliate. Flowers: tepals dark-brown with clear apex, 1.6–2.6 mm; outer whorl longer than inner whorl; anthers ca. 2 times filament length; stigmas much exceeding styles. Capsules dark-brown, ovoid, ± equaling to shorter than tepals. Seeds dark-brown, (with tuft of fine tangled hairs), ellipsoid, 0.8–1.2 mm. 2n = 36.


Phenology: Flowering and fruiting late summer.
Habitat: Wet, exposed rocky and sandy hillsides, lichen tundra, and mountain summits, growing where it may be practically only vascular plant
Elevation: circumpolar; 500–1300 m

Distribution

V22 316-distribution-map.jpg

Greenland, B.C., Man., Nfld. and Labr. (Labr.), N.W.T., Nunavut, Ont., Que., Sask., Yukon, Alaska, Maine, N.H., Vt., Eurasia

Discussion

Basal leaves and cauline leaves (numbering 2 or 3) are reddish and glabrous in Luzula confusa. Inflorescences have 1–3(–4) main branches terminated by 2–several peduncles, each bearing 1–5 flowers. The flowers are characterized by stigmas that much exceed the styles in length.

Selected References

None.

Lower Taxa

None.

"timesfilamentlength" is not declared as a valid unit of measurement for this property.

... more about "Luzula confusa"
persistent +
Janice Coffey Swab +
Lindeberg +
channeled;flat +
clear +  and deep brown +
conspicuous +
clear +  and deep brown +
more or less equaling to shorter +
conspicuous;barely visible +
exceeding +  and reaching +
0 cm0 mm <br />0 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Northern wood rush +
3 cm30 mm <br />0.03 m <br /> (28 cm280 mm <br />0.28 m <br />) +
Greenland +, B.C. +, Man. +, Nfld. and Labr. (Labr.) +, N.W.T. +, Nunavut +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +, Maine +, N.H. +, Vt. +  and Eurasia +
circumpolar +  and 500–1300 m +
in dense clusters +  and inserted +
headlike +
Wet, exposed rocky and sandy hillsides, lichen tundra, and mountain summits, growing where it may be practically only vascular plant +
multicellular +
3 +  and 1 +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
lacerate +  and fimbriate +
2 cm20 mm <br />0.02 m <br /> (?) +
green;brown or purplish black +
persistent +
Flowering and fruiting late summer. +
parietal +  and axile +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
dark-brown +
ellipsoid +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
green;brown or purplish black +
persistent +
Illustrated +
generally longer +
Luzula sect. Gymnodes +  and Luzula subg. Gymnodes +
Luzula confusa +
Luzula subg. Luzula +
species +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.26 cm2.6 mm <br />0.0026 m <br />) +
indistinct +
herb +  and cespitose +