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Sprangletop - Scolochloa festucacea
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.
- Details on Status Ranking and Review
Range Extent
ScoreB - 100-250 sq km (~40-100 sq mi)
Area of Occupancy
ScoreC - 3-5 4-km2 grid cells
Number of Populations
ScoreB - 6 - 20
Number of Occurrences or Percent Area with Good Viability / Ecological Integrity
ScoreA - No occurrences with excellent or good (A or B) viability or ecological integrity
Environmental Specificity
ScoreB - Narrow. Specialist or community with key requirements common
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 et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Species Range
Montana Range
Range Descriptions
Native
Range Comments
Collected in Flathead County; throughout the northwest region of North America (Lavin in Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).
Observations in Montana Natural Heritage Program Database
Number of Observations: 3
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Relative Density
Recency
(Observations spanning multiple months or years are excluded from time charts)
Habitat
Threats or Limiting Factors
STATE THREAT SCORE REASON
Threat impact not assigned because threats are not known (MTNHP Threat Assessment 2021).
References
- 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
Do you know of a citation we're missing?- 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.
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.- Smith, A. L. 1973. Life cycle of the marsh grass Scolochloa festucacea. Canadian Journal of Botany 51:1661-1668.
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