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This species is accepted, and its native range is Central & E. Canada to W. Central & E. U.S.A.

[GB]
Morphology General Habit
Perennial. Culms 65-150 cm long. Culm-internodes distally glabrous, or pubescent. Culm-nodes pubescent. Leaf-sheaths pilose; with reflexed hairs. Leaf-sheath oral hairs lacking, or ciliate. Ligule an eciliate membrane; 0.5-2 mm long; erose; truncate, or obtuse. Leaf-blades 12-32 cm long; 4-8 mm wide. Leaf-blade surface glabrous, or pubescent; hairy adaxially, or on both sides.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; oblong; 10-25 cm long. Primary panicle branches spreading, or drooping. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 6-8 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 6-8 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; 4-8 mm long; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface pubescent. Upper glume lanceolate; 5-10 mm long; membranous; without keels; 3(-5) -veined. Upper glume surface pubescent.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 8-12 mm long; chartaceous; without keel; 5 -veined. Lemma surface glabrous, or pubescent. Lemma margins eciliate, or ciliate. Lemma apex awned; 1 -awned. Principal lemma awn subapical; 3-8 mm long overall. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 2-5 mm long. Ovary with a fleshy appendage above style insertion; pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; hairy at apex.
Distribution
North America: western Canada, eastern Canada, northwest USA, north-central USA, northeast USA, south-central USA, and southeast USA.
Reference
Bromeae. Pavlick 2004.

Native to:

Alabama, Arkansas, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Manitoba, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Carolina, North Dakota, Ohio, Oklahoma, Ontario, Pennsylvania, Québec, Rhode I., South Carolina, South Dakota, Tennessee, Texas, Vermont, Vermont, Virginia, West Virginia, Wisconsin, Wyoming

Introduced into:

Taiwan

Bromus pubescens Muhl. ex Willd. appears in other Kew resources:

First published in Enum. Pl.: 120 (1809)

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.
  • Ibrahim, K.M. & Peterson, P.M. (2014). Grasses of Washington, D.C. Smithsonian Contributions to Botany 99: 1-128.
  • Kuo, M.L. (ed.) (2012). Flora of Taiwan, ed. 2, Suppl.: 1-414. Editorial Committee of the Flora of Taiwan, Second Edition, National Taiwan University.

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.
  • Ibrahim, K.M. & Peterson, P.M. (2014). Grasses of Washington, D.C. Smithsonian Contributions to Botany 99: 1-128.
  • Kuo, M.L. (ed.) (2012). Flora of Taiwan, ed. 2, Suppl.: 1-414. Editorial Committee of the Flora of Taiwan, Second Edition, National Taiwan University.

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