Skip to main content
This species is accepted, and its native range is W. U.S.A.

[GB]
Morphology General Habit
Perennial. Culms decumbent; 30-150 cm long; rooting from lower nodes. Culm-internodes distally glabrous, or pubescent. Culm-nodes pubescent. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs scanty, or lacking. Ligule an eciliate membrane; 2-4.2 mm long; lacerate; obtuse. Leaf-blades 13-26 cm long; 4-10 mm wide; light green, or glaucous. Leaf-blade surface smooth, or scaberulous; glabrous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; oblong; secund; 10-20 cm long. Primary panicle branches ascending, or spreading, or drooping. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 23-35 mm long; with hairs extending 1 mm beyond apex, or 3 mm beyond apex; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 23-35 mm long; with hairs extending 1 mm beyond apex, or 3 mm beyond apex; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; shorter than spikelet. Lower glume lanceolate; 6-9 mm long; membranous; without keels; 3 -veined. Upper glume lanceolate; 8-12 mm long; membranous; without keels; 5 -veined. Upper glume surface scabrous.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 12-16 mm long; chartaceous; without keel; 5 -veined. Lemma surface pubescent. Lemma margins ciliate; hairy below. Lemma apex awned; 1 -awned. Principal lemma awn subapical; 4-6 mm long overall. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 3.5-5 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: northwest USA and southwest .
Reference
Bromeae. Pavlick 2004.

Native to:

California, Nevada, Oregon, Washington

Bromus laevipes Shear appears in other Kew resources:

First published in Bull. Div. Agrostol. U.S.D.A. 23: 45 (1900)

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

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