Family:
Poaceae Barnhart
Genus:
Bouteloua Lag.

Bouteloua eriopoda (Torr.) Torr.

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

[GB]
Morphology General Habit
Perennial; caespitose. Rootstock evident. Stolons absent, or present. Culms decumbent; 20-60 cm long; wiry. Culm-internodes distally woolly. Ligule a ciliolate membrane. Leaf-blades convolute; 5-10 cm long; 0.5-2 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes 3-8; borne along a central axis; ascending; unilateral; 2-5 cm long; bearing 8-18 fertile spikelets on each. Central inflorescence axis 10-15 cm long; tip without extension, or subulate. Rhachis semiterete; scabrous on surface; terminating in a barren extension; extension subulate. Spikelet packing broadside to rhachis. Raceme-bases brief; pilose (woolly). Spikelets ascending; solitary. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 6-9 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose.
Fertile
Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 6-9 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; reaching apex of florets; thinner than fertile lemma; gaping. Lower glume lanceolate; 2.5-4 mm long; 0.33-0.5 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex attenuate. Upper glume lanceolate; 6-9 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume apex attenuate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 6-9 mm long; coriaceous; keeled; 3 -veined. Lemma surface glabrous, or puberulous; hairy below. Lemma apex dentate; 3 -fid; with outer lobes shorter; awned; 3 -awned. Principal lemma awn 1.5-3 mm long overall. Lateral lemma awns arising on apex of lobes; 0.3-0.5 mm long; shorter than principal. Palea 2 -veined. Rhachilla extension pilose; hairy at tip. Apical sterile florets 1 in number; barren; rudimentary. Apical sterile lemmas awned; 3 -awned. Apical sterile lemma awns 4-8 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; oblong; 2.5-3 mm long. Embryo 0.75 length of caryopsis.
Distribution
North America: northwest USA, north-central USA, southwest USA, south-central USA, and Mexico.
Reference
Cynodonteae. Gould.

Native to:

Arizona, California, Colorado, Kansas, Mexico Northeast, Mexico Northwest, Nevada, New Mexico, Oklahoma, Texas, Utah, Wyoming

Bouteloua eriopoda (Torr.) Torr. appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Bigelow, J.M. [131], New Mexico Chondrosum eriopodum K000885849 Yes
Vasey, G.R. [s.n.], New Mexico Chondrosum eriopodum K000885853 Yes
Wright, C. [748], USA Chondrosum eriopodum K000885848 Yes
Wright, C. [748], USA Chondrosum eriopodum K000885852 Yes
Fendler, A. [950], New Mexico Chondrosum eriopodum K000885851 Yes
Bigelow, J.M. [130], USA Chondrosum eriopodum K000885850 Yes

First published in Pacif. Railr. Rep. Whipple, Bot. 4(5; 4): 155 (1857)

Accepted by

  • Powell, A.M. & Worthington, R.D. (2018). Flowering plants of Trans-Pecos Texas and ajacent areas: 1-1444. BRIT Press.

Not accepted by

  • Govaerts, R. (1996). World Checklist of Seed Plants 2(1, 2): 1-492. MIM, Deurne. [Cited as Chondrosum eriopodum.]

Literature

Kew Backbone Distributions

  • 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 (2003). Flora of North America North of Mexico 25: 1-781. 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 2022. 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 2022. 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