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This variety is accepted, and its native range is Aleutian Islands to Canada, Washington, N. Idaho.
A specimen from Kew's Herbarium

[GB]
Morphology General Habit
Perennial. Culms erect, or geniculately ascending; 40-130 cm long. Culm-internodes distally pubescent. Leaf-sheaths striately veined; pilose; with reflexed hairs. Ligule an eciliate membrane; 3.5-5 mm long; lacerate. Leaf-blades 13-35 cm long; 6-15 mm wide. Leaf-blade surface pilose; sparsely hairy, or moderately hairy; hairy on both sides.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; ovate; 10-28 cm long; with spikelets clustered towards branch tips. Primary panicle branches ascending; bearing 2-3 fertile spikelets on each lower branch. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; compressed strongly; 22-40 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes eventually visible between lemmas.
Fertile
Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; compressed strongly; 22-40 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes eventually visible between lemmas.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; shorter than spikelet. Lower glume lanceolate; 9-13 mm long; 0.9 length of upper glume; membranous; 1-keeled; 3-5 -veined. Lower glume surface glabrous, or pubescent. Lower glume apex acute. Upper glume lanceolate; 10-15 mm long; 0.8 length of adjacent fertile lemma; membranous; 1-keeled; 7(-9) -veined. Upper glume surface glabrous, or pubescent. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 12-17 mm long; chartaceous; much thinner on margins; keeled; 9(-11) -veined. Lemma lateral veins prominent. Lemma surface pubescent. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn subapical; (3-)5-10 mm long overall. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; membranous. Anthers 3; 2.2-4.2 mm long. Ovary with a fleshy appendage above style insertion; pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
North America: Subarctic.
Reference
Bromeae. Pavlick 2004.

Native to:

Alaska, Alberta, Aleutian Is., British Columbia, Idaho, Manitoba, Ontario, Québec, Washington

Bromus sitchensis var. aleutensis (Trin. ex Griseb.) Hultén appears in other Kew resources:

Date Reference Identified As Barcode Type Status
s.coll. [s.n.], Alaska Bromus aleutensis K000913862
s.coll. [s.n.], Alaska Bromus aleutensis K000913861

First published in Acta Univ. Lund., 2, 38(1): 254 (1942)

Accepted by

  • Govaerts, R. (1996). World Checklist of Seed Plants 2(1, 2): 1-492. MIM, Deurne.

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.
  • Hultén, E.O.G. (1960). Flora of the Aleutian Islands and westernmost Alaska Peninsula: with notes on the flora of Commander Islands, ed. 2: 1-376. Weinheim : J. Cramer ; New York : Hafner Pub. Co.

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