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Montana Field Guide

Montana Field Guides

Rocky Mountain Sedge - Carex backii

Status Under Review

Global Rank: G5
State Rank: S1S3

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value:

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General Description
Caespitose. Stems erect, 14–25 cm. Leaves basal and lower-cauline, some greater than the inflorescence; blades 1–5 mm wide, yellowish. Inflorescence of 1 to 4 well-separated spikes; lowest bract greater than the inflorescence. Spikes bisexual, similar, erect to ascending, pedunculate, 5–10 mm long not including the basal female scales; male flowers above, few, inconspicuous. Perigynia 2 to 5, ascending, green, obovoid, glabrous, loosely aggregated, 5–6 mm long, tapered to the smooth 2–3 mm long beak; stigmas 3. Female scales green, elongate and bract-like below, ovate, shorter above. Achene 3-sided, filling the perigynium (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Known from Flathead and Stillwater counties; BC to NL south to CO, SD, IL and NY (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Habitat

References
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Citation for data on this website:
Rocky Mountain Sedge — Carex backii.  Montana Field Guide.  .  Retrieved on , from