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Montana Field Guides

Blackened Sedge - Carex atrosquama
Other Names:  Carex atrata var atrosquama

Native Species

Global Rank: G5
State Rank: S4
C-value: 5


Agency Status
USFWS:
USFS:
BLM:


 

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General Description
Caespitose with old leaves at the often reddish base. Stems erect, 10–45 cm. Leaves basal and lower-cauline; blades 1–4 mm wide. Inflorescence of 3 to 5 short-pedunculate, ascending to erect, loosely clustered spikes. Spikes 10–18 mm long, all similar; male flowers basal on uppermost spike otherwise all female. Perigynia green to purplish, elliptic, 3–4 mm long, scabrous on the margins; beaks 0.3–0.5 mm long; stigmas 3. Female scales blackish throughout, as long or barely shorter than the perigynia but nearly as broad. Achene 3-sided, partly filling the perigynium (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
AK to NT south to UT and CO (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Habitat
Moist to dry meadows, turf, fellfields; subalpine, lower alpine (Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Hodgson, J.R. 1970. Ecological distribution of Microtus montanus and Microtus pennsylvanicus in an area of geographic sympatry in southwestern Montana. Ph.D. Dissertation. Bozeman, Montana: Montana State University. 65 p.
    • Saunders, J.K. Jr. 1955. Food habits and range use of the Rocky Mountain goat in the Crazy Mountains, Montana. Journal of Wildlife Management 19(4):429-437.
    • Saunders, J.K., Jr. 1954. A two-year investigation of the food habits and range use of the Rocky Mountain goat in the Crazy Mountains, Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 22 p.
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Citation for data on this website:
Blackened Sedge — Carex atrosquama.  Montana Field Guide.  .  Retrieved on , from