Bouteloua dimorpha Columbus

This species is accepted, and its native range is Mexico to Central America.

[GB]
Morphology General Habit
Perennial; mat forming. Stolons present. Culms 5-25 cm long. Ligule a ciliolate membrane. Leaf-blades 1-12 cm long; 1-2 mm wide. Leaf-blade apex obtuse.
Morphology Reproductive morphology Inflorescences
Monoecious, or dioecious; with male and female spikelets in different inflorescences. Inflorescence composed of racemes; bracteate at pedicel base (subulate, 0.5-1mm); embraced at base by subtending leaf. Racemes 1; single; unilateral; 1-2.5 cm long. Rhachis angular. Spikelet packing lax. Spikelets solitary. Fertile spikelets sessile. Male spikelets sessile. Male inflorescence terminal; unlike female; a single raceme, or of racemes along a central axis; with pectinate racemes. Male spikelets distinct from female; 1 flowered; lanceolate; 3 mm long; glabrous. Male spikelet glumes 2. Male spikelet lemma 3 -veined; muticous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 2 mm long; falling entire. Spikelet callus square; pubescent.
Fertile
Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 2 mm long; falling entire. Spikelet callus square; pubescent.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume lanceolate; 2 mm long; 1 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume surface pilose. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile florets female. Fertile lemma ovate; 2 mm long; coriaceous; much thinner above; keeled; 3 -veined. Lemma apex lobed; 3 -fid; with central lobe bidentate; awned; 3 -awned. Principal lemma awn from a sinus; 5-7 mm long overall. Lateral lemma awns arising on inner edge of lobes; 5-7 mm long; subequal to principal. Palea fused below to rhachilla internode; orbicular; 1 length of lemma; cartilaginous; 2 -veined. Palea keels winged. Apical sterile florets 1 in number; lanceolate; 1.5 mm long. Apical sterile lemmas awned; 3 -awned. Apical sterile lemma awns 4-6 mm long; 3 per spikelet in number.
sex Male
Male inflorescence terminal; unlike female; a single raceme, or of racemes along a central axis; with pectinate racemes. Male spikelets distinct from female; 1 flowered; lanceolate; 3 mm long; glabrous. Male spikelet glumes 2. Male spikelet lemma 3 -veined; muticous.
Distribution
North America: Mexico. South America: Mesoamericana and Caribbean.
Reference
Cynodonteae. WDC.

Native to:

Cuba, Dominican Republic, Haiti, Honduras, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Southeast, Mexico Southwest, Trinidad-Tobago

Introduced into:

Florida

Bouteloua dimorpha Columbus appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Jun 27, 2012 Hinton, G.B. [13304], Michoacán K000465983 No
Hinton, G.B. [6632], Guerrero K000465986 No
Hinton, G.B. [6446], Guerrero K000465987 No
Hinton, G.B. [5462], Guerrero K000465988 No
Hinton, G.B. [12030], Michoacán K000465982 No
Hinton, G.B. [6648], Guerrero K000465985 No
Hinton, G.B. [1746], México State K000465989 No
Hinton, G.B. [13304], Michoacán K000465984 No
Hinton, G.B. [1761], México State K000465990 No

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 Opizia stolonifera.]

Literature

Kew Backbone Distributions

  • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
  • 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.
  • 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