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Montana Field Guide

Montana Field Guides

Sprangletop - Scolochloa festucacea

Species of Concern

Global Rank: G5
State Rank: S1
* (see State Rank Reason below)

Agency Status
MNPS Threat Rank:
C-value: 7

External Links

State Rank Reason (see State Rank above)
Scolochloa festucacea occurs through most of Canada and in portions of mid-western and western States. In Montana it is known from 3 locations collected from 1949 to 1999 in Flathead County. A fourth location from a specimen with a poorly defined location in Carbon county needs to be verified. Surveys to find this species have been unsuccessful.
General Description
Cool season, perennial, rhizomatous, aquatic. Stems 1–2 m. Leaves: blades 5–11 mm wide, flat and ascending; ligule membranous, 4–8 mm long; sheaths with overlapping margins. Inflorescence an open panicle 15–26 cm long. Spikelets 7–11 mm long, with 5 to 9 florets; glumes similar to lemmas. Lemmas 4–9 mm long, each with a distinctly hairy callus, usually keeled and distinctly parallel veined, unawned but with an acute tip; palea enclosed in floret. Disarticulation above glumes; unit of dispersal is the floret (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Range Comments
Collected in Flathead County; throughout the northwest region of N. America (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Summary of Observations Submitted for Montana
Number of Observations: 3

(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)


  • Literature Cited AboveLegend:   View Online Publication
    • Flora of North America Editorial Committee, eds. 2007. Flora of North America North of Mexico. Volume 24. Magnoliophyta: Commelinidae, Part 1. Oxford University Press, Inc., NY. xxxiii + 911 pp.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Sturm, J. and J.G. Sturm. 1796. Deutschlands Flora in Abbildungen (nur Tafeln). Stuttgart, Germany. 882 pp.
  • Additional ReferencesLegend:   View Online Publication
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    • Britton, N. L. and A. B. Brown. 1913. An Illustrated Flora of the Northern United States, Canada, and the British Possessions. 2nd Edition in 3 Volumes. New York, NY: Charles Scribner's Sons. B13BRI01PAUS.
    • Smith, A. L. 1973. Life cycle of the marsh grass Scolochloa festucacea. Canadian Journal of Botany 51:1661-1668.
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  • Additional Sources of Information Related to "Monocots"
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Citation for data on this website:
Sprangletop — Scolochloa festucacea.  Montana Field Guide.  .  Retrieved on , from