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This species is accepted, and its native range is Central & E. Canada to N. Central & E. U.S.A.
A specimen from Kew's Herbarium

[GB]
Morphology General Habit
Perennial. Culms erect; 75-125 cm long. Culm-nodes pubescent. Leaf-sheaths pilose; with reflexed hairs. Ligule an eciliate membrane; 0.3-0.7 mm long; lacerate. Leaf-blades erect; 7-25 cm long; 2.5-3 mm wide. Leaf-blade surface pubescent; hairy adaxially, or on both sides.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; embraced at base by subtending leaf. Peduncle glabrous, or pubescent above. Panicle open; ovate; 10-15 cm long. Primary panicle branches drooping; 2-3 -nate; 2-5 cm long; bearing 1-3 fertile spikelets on each lower branch. Panicle branches flexuous. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 7-13 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 15-30 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 7-13 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 15-30 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; shorter than spikelet. Lower glume lanceolate; 5-6.5 mm long; 0.75 length of upper glume; membranous; without keels; 3 -veined. Lower glume surface pubescent. Lower glume apex acute. Upper glume lanceolate; 7-8 mm long; 0.75 length of adjacent fertile lemma; membranous; without keels; 5 -veined. Upper glume surface pubescent. Upper glume apex obtuse; mucronate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 8-10 mm long; chartaceous; without keel; 7 -veined. Lemma surface pubescent; hairy all along. Lemma apex awned; 1 -awned. Principal lemma awn subapical; 2-3 mm long overall. Palea keels ciliate. Palea surface pubescent. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; membranous. Anthers 3; 1.5-2 mm long. Ovary with a fleshy appendage above style insertion; pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; hairy at apex; apex fleshy. Hilum linear.
Distribution
North America: western Canada, eastern Canada, north-central USA, northeast USA, south-central USA, and southeast USA.
Reference
Bromeae. Gr Indiana 1994.

Native to:

Connecticut, District of Columbia, Illinois, Indiana, Iowa, Maine, Manitoba, Maryland, Massachusetts, Michigan, Minnesota, New Hampshire, New Jersey, New York, North Dakota, Ohio, Ontario, Pennsylvania, Québec, South Dakota, Vermont, Virginia, West Virginia, Wisconsin

Bromus kalmii A.Gray appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Mar 1, 1950 Douglas, G.E. [s.n.] K000913841
Jan 1, 1950 Torrey, J. [s.n.] K000913877
Douglas, G.E. [s.n.] K000913876
s.coll. [223] K000913875

First published in Manual: 600 (1848)

Accepted by

  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.

Literature

Kew Backbone Distributions

  • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.

GrassBase - The Online World Grass Flora
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0