Montana Field Guide

Help

Montana Field Guides

Home - Other Field Guides
- Kingdom - Plants - Plantae
  - Division - Flowering Plants - Anthophyta
    - Class - Monocots - Monocotyledoneae
      - Order - Grasses/Sedges - Cyperales
        
        Family - Sedges - Cyperaceae
        
        Species - Straw-colored Flatsedge - Cyperus strigosus

Straw-colored Flatsedge - Cyperus strigosus

Potential Species of Concern
Native Species

Global Rank: G5
State Rank: SH
(see State Rank Reason below)
State Threat Score: Unknown
C-value: 4

Agency Status
USFWS:
USFS:
BLM:

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 et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments

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

Habitat

Stream banks; valleys (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?
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
Web Search Engines for Articles on "Straw-colored Flatsedge"

Take us with you!

Look for this PDF icon as you search and browse. Click it to build a custom PDF with species shown on that page or for all the species within that taxonomic level. To create your own list of species, use the PDF Creator tool at the bottom of the Advanced Search page.

Here's some links if you want to download a whole group.

Dragonflies / Damselflies

Ferns and allies

Conifers

Flowering Plants (Dicots)

Flowering Plants (Monocots)

Citation for data on this website:
Straw-colored Flatsedge — Cyperus strigosus. Montana Field Guide. Montana Natural Heritage Program. Retrieved on April 18, 2024, from https://FieldGuide.mt.gov/speciesDetail.aspx?elcode=PMCYP063D0