Home/Species/ Broad-glumed Brome

Bromus latiglumis

(Shear) A.S. Hitchc.

Broad-glumed Brome

G5Secure Found in 1 roadless area NatureServe Explorer →

G5SecureGlobal Rank

UnknownThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.132318

Element CodePMPOA151M0

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicoccurs (regularly, as a native taxon) in multiple nations

KingdomPlantae

PhylumAnthophyta

ClassMonocotyledoneae

OrderCyperales

FamilyPoaceae

GenusBromus

Synonyms

Bromus altissimusPurshBromus purgansL.

Other Common Names

Brome à glumes larges (FR) Earlyleaf Brome (EN) earlyleaf brome (EN)

Concept Reference

Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

Taxonomic Comments

The name Bromus purgans has been used for plants referred to by Kartesz (1999) as B. kalmii, B. latiglumis, and B. pubescens; Kartesz does not recognize B. purgans as occurring within the range of the Synthesis.

Conservation Status

Rank Method Rank calculation - Biotics v2

Review Date2025-07-09

Change Date1988-02-25

Edition Date2025-07-09

Edition AuthorsJohnson, J. (2025)

Threat ImpactUnknown

Range Extent>2,500,000 square km (greater than 1,000,000 square miles)

Number of Occurrences> 300

Rank Reasons

Bromus latiglumis is a perennial grass found in the north-central and eastern United States and southern Canada. With a broad distribution, large number of occurrences, and preference for abundant habitats, this species is considered secure.

Range Extent Comments

Bromus latiglumis is found in the northeastern and north-central United States from Montana to Maine, extending south to Kansas, Tennessee, and North Carolina (FNA 2007, Weakley and the Southeastern Flora Team 2025). In Canada, the range extends from Nova Scotia, across the southern edge of the boreal and taiga forests, to northern British Columbia. Range extent was estimated using herbarium specimens, photo-based observations, and NatureServe Network occurrence data collected between 1994 and 2025 (GBIF 2025, iNaturalist 2025, NatureServe 2025, RARECAT 2025, SEINet 2025).

Occurrences Comments

By applying a 1 km separation distance to herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1994 and 2025, it is estimated that there are more than 300 occurrences rangewide (GBIF 2025, iNaturalist 2025, NatureServe 2025, RARECAT 2025, SEINet 2025).

Threat Impact Comments

The most serious documented threat to this species is competition from both herbaceous and woody weeds such as reed canarygrass, multiflora rose, black locust, and bush honeysuckle (NatureServe 2025). Other threats may include development, forest management, and water management.

Ecology & Habitat

Habitat

"Bromus latiglumis grows in shaded or open woods, along stream banks, and on alluvial plains and slopes" (FNA 2007).

Terrestrial Habitats

Forest/WoodlandForest - HardwoodWoodland - HardwoodGrassland/herbaceous

Palustrine Habitats

Riparian

Other Nations (2)

United StatesN5

Province	Rank	Native
Ohio	SNR	Yes
Massachusetts	SNR	Yes
New Jersey	S2	Yes
Virginia	S4	Yes
Kentucky	SU	Yes
Tennessee	SNR	Yes
New York	S5	Yes
Nebraska	SNR	Yes
Delaware	S1	Yes
Connecticut	SNR	Yes
South Dakota	SNR	Yes
Minnesota	SNR	Yes
North Carolina	S1	Yes
New Hampshire	SNR	Yes
Vermont	S5	Yes
Michigan	SNR	Yes
Kansas	S1	Yes
North Dakota	SNR	Yes
West Virginia	S4	Yes
Maryland	S1	Yes
Illinois	S3	Yes
Iowa	S4	Yes
Missouri	S3	Yes
District of Columbia	SX	Yes
Pennsylvania	SNR	Yes
Indiana	S4	Yes
Maine	SNR	Yes
Wisconsin	SNR	Yes

CanadaN4

Province	Rank	Native
Nova Scotia	S2	Yes
Ontario	S4	Yes
Alberta	S1	Yes
New Brunswick	S3	Yes
Manitoba	S2	Yes
Quebec	S3	Yes
Saskatchewan	S4	Yes

Threat Assessments

Threat	Scope	Severity	Timing
8 - Invasive & other problematic species, genes & diseases	Large - restricted	Unknown	High (continuing)
8.1 - Invasive non-native/alien species/diseases	Large - restricted	Unknown	High (continuing)

Plant Characteristics

DurationPERENNIAL

Economic Value (Genus)No

Roadless Areas (1)

Michigan (1)

Area	Forest	Acres
Norwich Plains Revised Roadless Area	Ottawa National Forest	4,360

References (8)

Flora of North America Editorial Committee (FNA). 2007a. Flora of North America north of Mexico. Vol. 24. Magnoliophyta: Commelinidae (in part): Poaceae, part 1. Oxford Univ. Press, New York. xxviii + 911 pp.
Global Biodiversity Information Facility (GBIF). 2025. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2025).
iNaturalist. 2025. Online. Available: https://www.inaturalist.org (accessed 2025).
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
NatureServe. 2025. NatureServe Network Biodiversity Location Data. NatureServe, Arlington, Virginia.
<p>NatureServe's Rapid Analysis of Rarity and Endangerment Conservation Assessment Tool (RARECAT). 2025. Version: 2.1.1 (released April 04, 2025).</p>
Southwest Environmental Information Network (SEINet). 2025. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2025).
Weakley, A.S., and Southeastern Flora Team. 2025. Flora of the southeastern United States Web App. Edition of February 18, 2025. University of North Carolina Herbarium (NCU), North Carolina Botanical Garden, University of North Carolina, Chapel Hill. Online. Available: https://fsus.ncbg.unc.edu (accessed 2025).

Bromus latiglumis

Habitat

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