OregonFlora species comparison

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Carex deflexa var. boottii

mountain mat sedge
Habit Plants cespitose to mat-forming, 5–31 cm tall; plant bases reddish to purplish or dark brown, often with persistent leaves of previous year.
Leaves

blades 0.9–2.6(3.2) mm wide, green, usually longer than the culms, not densely papillose on the lower surface.
Inflorescences

basal spikes female, 0–3; more or less hidden among leaf sheaths or sometimes raised on stalks much longer than the spike, bract of lowest non-basal spike leaf-like; longer than the inflorescence; non-basal female spikes 1–4, 0.3–0.8 cm long, with 4–15 perigynia; terminal spike male, 0.3–1.1 cm long.
Perigynia

of lateral (non-basal) spikes elliptic to obovoid, 2.3–3.1 × 1–1.4 mm, pubescent; veinless but with 2 ribs, bases succulent, withering when dry;

beaks 0.4–0.8 mm;

teeth 0.1–0.2 mm long;

stigmas 3.
Achenes

trigonous.
Female scales

shorter than the perigynia; pale to dark reddish brown with white margins;

apex acute to acuminate.

Carex deflexa var. boottii
Distribution
Discussion

Establishing in disturbed openings and persisting in open forests in mountains, at elevations where there is snow for much of the winter. 800–2500 m. BW, Casc. CA, ID, WA; north to British Columbia, east to CO. Native.

Carex deflexa var. boottii is an upland taxon with hairy perigynia and basal spikes hidden among the leaf sheaths. It is very similar to C. rossii, which typically has a longer beak and tougher leaves and grows at lower elevations.
Source Flora of Oregon, volume 1, page 197
Barbara Wilson, Richard Brainerd, Nick Otting
Web links 
Unless otherwise noted, all data comes from OregonFlora.



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