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

[GB]
Morphology General Habit
Perennial. Culms 30-100 cm long. Culm-internodes distally glabrous. Culm-nodes glabrous, or pubescent. Leaf-sheaths glabrous on surface, or pilose. Ligule an eciliate membrane; 2.5 mm long; truncate, or obtuse. Leaf-blades 4-8 mm wide. Leaf-blade surface glabrous, or pilose; hairy adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; ovate; nodding; 7-15 cm long. Primary panicle branches drooping. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 6-10 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 12-15 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 6-10 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 12-15 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; membranous; without keels; 3 -veined. Lower glume surface pubescent. Upper glume lanceolate; membranous; without keels; 3 -veined. Upper glume surface pubescent.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 8-14 mm long; chartaceous; without keel; 5 -veined. Lemma surface pubescent, or pilose. Lemma apex awned; 1 -awned. Principal lemma awn subapical; 1-3.5 mm long overall. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 2-3 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, northwest USA, southwest USA, south-central USA, and Mexico.
Reference
Bromeae. Pavlick 2004.

Native to:

Alberta, Arizona, British Columbia, California, Colorado, Idaho, Manitoba, Montana, Nebraska, Nevada, New Mexico, North Dakota, Saskatchewan, South Dakota, Texas, Utah, Wyoming

Bromus porteri (Coult.) Nash appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Hinton, G.B. [1337], México State K000465736

First published in Bull. Torrey Bot. Club 22: 512 (1895)

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.
  • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
  • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
  • Garcia-Mendoza, A.J. & Meave, J.A. (eds.) (2012). Diversidad florística de Oaxaca: de musgos a angiospermas (colecciones y listas de especies), ed. 2: 1-351. Instituto de Biología, Universidad Nacional Autónoma de México.
  • Saarela, J.M., Peterson, P.M. & Váldes-Reyna, J. (2014). A taxonomic revision of Bromus (Poaceae: Pooideae: Bromeae) in México and Central America Phytotaxa 185(1): 1-147.

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

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