Bouteloua griffithsii Columbus

This species is accepted, and its native range is Central & SW. Mexico.

[GB]
Morphology General Habit
Annual. Culms prostrate; slender; 4-35 cm long. Lateral branches ample. Leaf-sheaths glabrous on surface. Ligule a fringe of hairs; 0.3 mm long. Leaf-blades 1-5 cm long; 1-2 mm wide. Leaf-blade surface scabrous; rough adaxially; pilose; sparsely hairy; hairy adaxially. Leaf-blade margins scabrous. Leaf-blade apex acute.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes; terminal and axillary. Racemes 4-8; borne along a central axis; cuneate; 0.4 cm long; bearing a triad of spikelets. Central inflorescence axis 3 cm long; tip subulate. Rhachis deciduous from axis; terminating in a barren extension; extension bristle-like; extension 2 mm long. Spikelets in threes. Fertile spikelets pedicelled; 1 in the cluster. Companion sterile spikelets sessile; 2 in the cluster. Pedicels oblong.
Sterile
Companion sterile spikelets well-developed; male; cuneate; laterally compressed; 3 mm long; as long as fertile; deciduous with the fertile. Companion sterile spikelet glumes membranous; villous; acuminate; mucronate. Companion sterile spikelet lemmas 2; 2-3 mm long; lobed (3-fid); several-awned (3 awns); with 1 mm long awn.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 4 mm long; falling entire; deciduous with accessory branch structures. Companion sterile spikelets well-developed; male; cuneate; laterally compressed; 3 mm long; as long as fertile; deciduous with the fertile. Companion sterile spikelet glumes membranous; villous; acuminate; mucronate. Companion sterile spikelet lemmas 2; 2-3 mm long; lobed (3-fid); several-awned (3 awns); with 1 mm long awn.
Fertile
Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets cuneate; laterally compressed; 4 mm long; falling entire; deciduous with accessory branch structures.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; reaching apex of florets; similar to fertile lemma in texture. Lower glume flabellate; 0.5-1 mm long; 0.1-0.2 length of upper glume; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume lanceolate; 4 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume surface villous. Upper glume apex obtuse, or acute; mucronate.
Morphology Reproductive morphology Flowers Florets
Fertile florets female. Fertile lemma oblong; 3-4 mm long; membranous; without keel; 3 -veined. Lemma surface pilose. Lemma margins ciliate. 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 from a sinus; 1-2 mm long overall; limb ciliate. Lateral lemma awns arising on margin of lemma; 1-2 mm long; subequal to principal; ciliate. Palea apex awned; awns 2 mm long. Apical sterile florets 2 in number; male, or barren; oblong. Apical sterile lemmas lobed; 3 -fid; awned; 3 -awned. Apical sterile lemma awns 4-5 mm long; ciliate.
Distribution
North America: Mexico.
Reference
Cynodonteae. Swallen.

Native to:

Mexico Central, Mexico Southwest

Bouteloua griffithsii Columbus appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Hitchcock, A.S. [393], Mexico Cathestecum prostratum K000309072 Yes
Hitchcock, A.S. [6776], Mexico Cathestecum prostratum K000309071 isotype Yes

First published in Aliso 18: 63 (1999)

Not accepted by

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

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.

  • 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