Family:
Poaceae Barnhart
Genus:
Bouteloua Lag.

Bouteloua nervata Swallen

This species is accepted, and its native range is Mexico (Hidalgo, México D.F.).

[GB]
Morphology General Habit
Perennial. Stolons present. Culms erect (male), or prostrate (female); 5-15 cm long. Ligule a fringe of hairs. Leaf-blades flat, or involute; 3-8 cm long; 2-3 mm wide. Leaf-blade surface pilose.
Morphology Reproductive morphology Inflorescences
Dioecious. Inflorescence composed of racemes. Racemes 2-3; borne along a central axis; unilateral; 0.8-1.5 cm long. Central inflorescence axis 0.4-0.6 cm long. Rhachis deciduous from axis; flattened; terminating in a barren extension; extension bristle-like. Spikelet packing 2 -rowed. Spikelets pectinate; solitary. Fertile spikelets pedicelled. Male spikelets sessile. Pedicels oblong. Male inflorescence similar to female; of racemes along a central axis; with pectinate racemes. Male spikelets distinct from female; 1 flowered; without rhachilla extension; persistent; lanceolate; 4.5-6 mm long; glabrous. Male spikelet glumes 2; muticous. Male spikelet lemma 3 -veined; muticous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets lanceolate; dorsally compressed; 8-10 mm long; falling entire; deciduous with accessory branch structures.
Fertile
Spikelets comprising 1 fertile florets; with diminished florets at the apex. Spikelets lanceolate; dorsally compressed; 8-10 mm long; falling entire; deciduous with accessory branch structures.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 0.66-0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 8-10 mm long; membranous; without keels; 2-5 -veined. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile florets female. Fertile lemma elliptic; 5-6 mm long; cartilaginous; without keel; 3 -veined. Lemma surface with 2 longitudinal grooves. Lemma apex awned; 3 -awned. Principal lemma awn 5 mm long overall. Lateral lemma awns 4 mm long; shorter than principal. Palea 1 length of lemma. Palea apex awned; awns 0.5-1 mm long. Apical sterile florets 3 in number; barren; in a clump; linear; 2 mm long. Apical sterile lemmas awned; 3 -awned. Apical sterile lemma awns 15-18 mm long.
Morphology Reproductive morphology Flowers
Lodicules 2; cuneate; fleshy. Anthers 3; 3 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; ellipsoid. Embryo 0.9 length of caryopsis.
sex Male
Male inflorescence similar to female; of racemes along a central axis; with pectinate racemes. Male spikelets distinct from female; 1 flowered; without rhachilla extension; persistent; lanceolate; 4.5-6 mm long; glabrous. Male spikelet glumes 2; muticous. Male spikelet lemma 3 -veined; muticous.
Distribution
North America: Mexico.
Reference
Cynodonteae. WDC.

Native to:

Mexico Central, Mexico Northeast

Bouteloua nervata Swallen appears in other Kew resources:

First published in N.L.Britton & al. (ed.), N. Amer. Fl. 17: 626 (1939)

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 Buchlomimus nervatus.]

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

  • 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