1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida mexicana Scribn. ex Henrard

        This species is accepted, and its native range is Mexico.

    [GB]
    Habit
    Perennial; caespitose. Culms erect, or geniculately ascending; 15-30 cm long. Culm-internodes distally pubescent. Lateral branches lacking. Leaf-sheaths longer than adjacent culm internode; scaberulous. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs. Leaf-blades conduplicate; 10-20 cm long; 1-2 mm wide; glaucous. Leaf-blade surface scabrous; rough on both sides. Leaf-blade margins scabrous. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence a panicle. Peduncle pubescent above. Panicle open; ovate; effuse; 30 cm long; 20 cm wide; with spikelets clustered towards branch tips. Primary panicle branches spreading; distant; 1 -nate; rebranched near base; 5-10 cm long. Panicle axis pubescent. Panicle branches scabrous; pubescent in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels scabrous.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 13 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long; pubescent; acute.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 13 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1 mm long; pubescent; acute.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume linear; 13 mm long; 1.1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 1 mm long. Upper glume linear; 12 mm long; 1.2 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein smooth. Upper glume lateral veins absent. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 1 mm long.
    Florets
    Fertile lemma lanceolate; subterete; 8-10 mm long; coriaceous; without keel; 3 -veined. Lemma midvein scabrous. Lemma apex acuminate; awned; 3 -awned. Principal lemma awn 3-branched; with 15-17 mm long limb; persistent. Lateral lemma awns 15-17 mm long; subequal to principal.
    Distribution
    North America: Mexico.
    Reference
    Aristideae. Henrard 1997.

    Distribution

    Native to:

    Mexico Central, Mexico Northeast, Mexico Southwest

    Aristida mexicana Scribn. ex Henrard appears in other Kew resources:

    First published in Meded. Rijks-Herb. 54A: 345 (1927)

    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.
    • 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.

    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.

    Sources

    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 2020. 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 2020. 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