Identity
Unique IDELEMENT_GLOBAL.2.155696
Element CodePMPOA150N0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderCyperales
FamilyPoaceae
GenusBromus
Other Common NamesArctic Brome (EN) arctic brome (EN) Brome de Kalm (FR) Kalm's Brome (EN)
Concept ReferenceKartesz, 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 CommentsThe name 'Bromus purgans' is a synonym of B. kalmii, however, the name B. purgans has been misapplied to B. latiglumis and B. pubescens.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2025-07-07
Change Date1986-02-19
Edition Date2025-07-07
Edition AuthorsJohnson, J. (2025)
Threat ImpactUnknown
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences> 300
Rank ReasonsBromus kalmii is a perennial grass that is found in prairies, meadows, and other open areas in the northeastern United States and southern Canada. With a broad range, more than 300 occurrences, and a preference for a wide range of habitats, this species is considered secure.
Range Extent CommentsBromus kalmii is native to southern Canada from Manitoba to Quebec, and the northeastern United States from North Dakota to Maine and south to Illinois and Virginia (FNA 2007). 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 CommentsBy 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 CommentsAlthough threats are not widely documented, Bromus kalmii is potentially threatened by development, road maintenance, invasive species, and other threats in some places. However, their overall impact is likely negligible given the species' broad range, large number of occurrences, tolerance of light disturbance, and affinity for typically abundant habitats, as well as no obvious intrinsic vulnerabilities.