Bouteloua erecta (Vasey & Hack.) Columbus

This species is accepted, and its native range is S. Arizona, SW. Texas to Honduras.

[GB]
Morphology General Habit
Perennial. Stolons present. Culms 15-30 cm long. Ligule a ciliolate membrane; 0.3 mm long. Leaf-blades 3-6 cm long; 1-1.5 mm wide. Leaf-blade surface ribbed.
Morphology Reproductive morphology Inflorescences
Androdioecious. Inflorescence composed of racemes. Racemes 2-7; borne along a central axis; cuneate; 0.4-0.7 cm long; bearing a triad of spikelets. Central inflorescence axis 0.5-4 cm long; tip subulate (forked). Rhachis deciduous from axis; terminating in a barren extension; extension bristle-like. Raceme-bases linear; 0.5 mm long; persistent. Spikelets in threes. Fertile spikelets pedicelled; 1 in the cluster. Companion sterile spikelets sessile; 2 in the cluster. Pedicels linear; 1-1.5 mm long; scaberulous. Male inflorescence similar to female.
Sterile
Companion sterile spikelets well-developed; male; cuneate; laterally compressed; 3.5-5.5 mm long; as long as fertile; deciduous with the fertile. Companion sterile spikelet glumes membranous; emarginate; muticous. Companion sterile spikelet lemmas 2; lobed (3-fid); several-awned (3 awns).
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 4-5.5 mm long; falling entire; deciduous with accessory branch structures. Companion sterile spikelets well-developed; male; cuneate; laterally compressed; 3.5-5.5 mm long; as long as fertile; deciduous with the fertile. Companion sterile spikelet glumes membranous; emarginate; muticous. Companion sterile spikelet lemmas 2; lobed (3-fid); several-awned (3 awns).
Fertile
Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 4-5.5 mm long; falling entire; deciduous with accessory branch structures.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; reaching apex of florets, or shorter than spikelet; similar to fertile lemma in texture. Lower glume oblong; 0.1-0.3 mm long; 0.05 length of upper glume; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex emarginate. Upper glume lanceolate; 4 mm long; 1.3 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein ciliate (below). Upper glume lateral veins absent. Upper glume apex emarginate; mucronate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 3 mm long; membranous; without keel; 3 -veined. Lemma margins ciliolate. Lemma apex lobed; 3 -fid; with outer lobes shorter and with central lobe bidentate; incised 0.25 of lemma length; awned; 3 -awned. Principal lemma awn 0.5-1 mm long overall. Lateral lemma awns arising on margin of lemma; 0.5-1 mm long; subequal to principal. Apical sterile florets 2 in number; male; separate; oblong. Apical sterile lemmas lobed; 3 -fid; awned; 3 -awned. Apical sterile lemma awns 0.5-1 mm long.
sex Male
Male inflorescence similar to female.
Distribution
North America: southwest USA, south-central USA, and Mexico.
Reference
Cynodonteae. WDC.

Native to:

Arizona, El Salvador, Guatemala, Honduras, Mexico Northeast, Mexico Northwest, Mexico Southwest, Texas

Bouteloua erecta (Vasey & Hack.) Columbus appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Hinton, G.B. [6477], Guerrero K000476044 No
Hinton, G.B. [4782], México State K000476045 No

First published in Aliso 18: 63 (1999)

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

  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew. [Cited as Cathestecum erectum.]

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.
  • 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.
  • Nelson Sutherland, C.H. (2008). Catálogo de las plantes vasculares de Honduras. Espermatofitas: 1-1576. SERNA/Guaymuras, Tegucigalpa, Honduras.

  • 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 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