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Montana Field Guide

Montana Field Guides

Straw-colored Flatsedge - Cyperus strigosus

Potential Species of Concern

Global Rank: G5
State Rank: SH
* (see State Rank Reason below)

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 4

External Links






State Rank Reason (see State Rank above)
Known in Montana from two historical collections (Flathead and Missoula Counties).
 
General Description
Caespitose annual to perennial. Stems ascending to erect, 10–60 cm. Leaves mainly basal, 2–10 mm wide, flat. Inflorescence of ovoid to hemispheric clusters of spikes of sessile spikelets. Spikelets cylindric, 4–10 mm long. Scales pale brown with a green midvein, 3–4 mm long, several-veined. Flowers: stamens 3; style 3-branched. Achene narrowly elliptic, dark brown, 3-sided, ca. 2 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Flathead and Missoula counties; throughout U.S. and adjacent Canada (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Habitat

References
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Citation for data on this website:
Straw-colored Flatsedge — Cyperus strigosus.  Montana Field Guide.  .  Retrieved on , from