Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Broad-glumed Brome - Bromus latiglumis

No photos are currently available
If you have a high quality photo of this species, are confident in the identification, and would like to submit it for inclusion on the Montana Field Guide, please send it to us using our online photo submission tool.

Not Documented

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

Agency Status


External Links

State Rank Reason (see State Rank above)
Bromus latiglumis has not been documented in Montana (Lesica et al. 2012; Postings as of October 23, 2019 on the Consortium of Pacific Northwest Herbaria [] and Rocky Mountain Herbarium [] portals). No Montana specimens have been verified (MTNHP Status Review in 2018). A reported 2010 observation is likely a mis-identification and no specimen was collected. There is potential for it to occur in Montana, and potential specimens should be reported and confirmed by one of our State Herbaria (University of Montana, Montana State University, or Montana State University-Billings). A conservation status rank is not applicable (SNA) because this plant is not known to occur in Montana.
General Description
This is adapted from the Flora of the Great Plains (McGregor et al. [eds.] 1986).

PLANTS: Cespitose perennials 55-130(-160) cm tall. Culms mostly glabrous, internodes usually 10 or more.

LEAVES: Blades 10-30 cm long, 3.5-11(-13) mm wide, glabrous to scabrous or (rarely) sparsely appressed-pubescent; sheaths glabrous to densely retrorse-pilose; auricles present and conspicuous (unless broken off); ligules mostly less than 1.5 mm long, often pubescent.

INFLORESCENCE: Panicle 10-24 cm long, open, the branches spreading to ascending, somewhat flexuous. Spikelets 5-10(-12)-flowered, 15-33 mm long, 4-9 mm wide. Glumes and lemmas usually hairy. First glume mostly 5-7 mm long, 1-nerved; second glume mostly 6.5-9 mm long, 3-nerved; lowest lemma 8.5-11 mm long, awned 1-5 mm; anthers 1.5-2.8 mm long.

Diagnostic Characteristics
In Montana characteristics of Bromus latiglumis that distinguished it from other native, perennial bunchgrasses are (Lesica et al. 2012):
*Culms with 9-20 nodes,
*Leaf sheaths with dense pilose hairs near the collar and throat, and
*Auricles of 1-2.5 mm long on most of the lower leaves.

Potential specimens should be reported and confirmed by one of our State Herbaria:
University of Montana, Montana State University, or Montana State University-Billings

Shaded or open woods, along stream banks, and on alluvial plains and slopes (Barkworth in FNA 2007).

  • Literature Cited AboveLegend:   View Online Publication
    • Flora of North America Editorial Committee. 2007. Flora of North America North of Mexico. Vol. 24. Magnoliophyta: Commelinidae (in part): Poaceae, part 1. Oxford Univ. Press, New York. xxviii + 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.
    • McGregor, R.L. (coordinator), T.M. Barkley, R.E. Brooks, and E.K. Schofield (eds). 1986. Flora of the Great Plains: Great Plains Flora Association. Lawrence, KS: Univ. Press Kansas. 1392 pp.
  • 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 "Broad-glumed Brome"
Login Logout
Citation for data on this website:
Broad-glumed Brome — Bromus latiglumis.  Montana Field Guide.  .  Retrieved on , from