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Montana Field Guide

Montana Field Guides

Pale Spikerush - Eleocharis flavescens

Status Under Review
Undetermined Origin

Global Rank: G5
State Rank: SU
(see State Rank Reason below)

Agency Status


External Links

State Rank Reason (see State Rank above)
Reported for southwest Montana (Dorn 1984). More information is needed to determine the status of the taxa in the state.
General Description
Tufted perennials from slender rhizomes, 3-15 cm tall. Leaf sheaths membranous, whitish, prolonged, many free from stem. Spikelets 2-6 mm long, ovate, with fewer than 20 flowers. Scales purplish brown with a paler midvein; bristles 6-7, white, equaling or slightly longer than the achene. Achenes ca. 1 mm long, glossy, purplish brown, the surface minutely punctate (adapted from: Welsh et al., 1993, A Utah Flora, 2nd ed.).

According to Kartesz (in prep., 2012) MT has variety thermalis (Rydb.) Cronq.

Range Comments
CA, AZ, UT, MT and WY (Kartesz in prep. 2012).

Observations in Montana Natural Heritage Program Database
Number of Observations: 1

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)

  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Fassett, N. C. 1985. (3rd ed.) A Manual of Aquatic Plants, with Revision Appendix by E. C. Ogden. University of Wisconsin Press, Madison. 405 pp.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • 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.
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Citation for data on this website:
Pale Spikerush — Eleocharis flavescens.  Montana Field Guide.  .  Retrieved on , from