Carex saximontana


Bull. Torrey Bot. Club 33: 439. 1906.

Common names: Rocky Mountain sedge
Synonyms: Carex backii var. saximontana (Mackenzie) B. Boivin Carex backii var. subrostrata (Bates) Dorn Carex durifolia var. subrostrata Bates
Treatment appears in FNA Volume 23. Treatment on page 562. Mentioned on page 558, 560.

Culms 2.5–34 cm. Leaves: basal sheaths pale to medium brown; blades dark green to greenish glaucous, 1.9–4.9 mm wide, longer than stems, coriaceous, margins white-hyaline, smooth or scabrous. Lateral spikes 0–2, basal, on erect peduncles. Terminal spikes with staminate portion 2–3-flowered, 1.6–3.4 × 0.5–1.6 mm; pistillate portion 2–6-flowered. Pistillate scales green; proximal scales with margins 2.4–4.6 mm wide, essentially concealing perigynia, apex acute; distal scales lanceolate to ovate, apex awned to acute. Staminate scales green or white, ovate to oblong, 1.5–3 × 1–1.6 mm, margins connate near base or for entire length, enfolding scales above, white or with brown subapical band, apex obtuse. Anthers 1–1.5 mm. Perigynia pale green, obovoid, 3.2–4.9 × 1.6–2.5 mm, tightly enveloping achenes, apex abruptly tapered, papillose on distal 1/3; beak 0.6–1.2 mm, scabrous. Stigmas clavate, erect, short, thick, minutely papillose. Achenes pale to dark brown, obpyriform, 2.5–3 × 1.6–2.4 mm. 2n = 64.

Phenology: Fruiting spring–summer (late May–mid Jul).
Habitat: Moist to dry, open prairies, pine, and deciduous woodlands, on ridges and slopes
Elevation: 200–2100 m


V23 1070-distribution-map.jpg

Man., Ont., Sask., Colo., Minn., Mont., Nebr., N.Dak., S.Dak., Wyo.


Selected References


Lower Taxa

... more about "Carex saximontana"
William J. Crins +, Robert F. C. Naczi +, A. A. Reznicek +  and Bruce A. Ford +
Mackenzie +
Rocky Mountain sedge +
Man. +, Ont. +, Sask. +, Colo. +, Minn. +, Mont. +, Nebr. +, N.Dak. +, S.Dak. +  and Wyo. +
200–2100 m +
Moist to dry, open prairies, pine, and deciduous woodlands, on ridges and slopes +
Fruiting spring–summer (late May–mid Jul). +
Bull. Torrey Bot. Club +
Illustrated +  and Endemic +
Carex backii var. saximontana +, Carex backii var. subrostrata +  and Carex durifolia var. subrostrata +
Carex saximontana +
Carex sect. Phyllostachyae +
species +