1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida tuitensis Sánchez-Ken & Dávila

        This species is accepted, and its native range is Mexico (Jalisco).

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 1-2 mm diam.; 9-15 -noded. Culm-internodes terete; 2-12 cm long; distally glabrous. Culm-nodes glabrous. Lateral branches ample. Leaf-sheaths 3-9 cm long; longer than adjacent culm internode; indistinctly veined; glabrous on surface. Ligule a fringe of hairs; 0.2-0.3 mm long. Leaf-blades straight, or flexuous; flat; 10-50 cm long; 2-4 mm wide. Leaf-blade surface scaberulous; rough adaxially. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence a panicle. Peduncle 11-30 cm long; smooth, or scaberulous above. Panicle open; ovate; effuse; 14-35 cm long; 12-20 cm wide; with spikelets clustered towards branch tips. Primary panicle branches spreading; 9-15 cm long. Panicle branches with prominent pulvini. Spikelets in pairs. Fertile spikelets pedicelled. Pedicels 5-18 mm long.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 6-7.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.7-1 mm long; pubescent; obtuse.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 6-7.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 0.7-1 mm long; pubescent; obtuse.
    Glume
    Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 4-8 mm long; 0.7-0.9 length of upper glume; membranous; 3 -veined. Lower glume primary vein scabrous. Lower glume lateral veins obscure. Lower glume surface glabrous. Lower glume apex acute; mucronate, or awned; 1 -awned. Lower glume awn 0.5-2 mm long. Upper glume lanceolate; 6-7.5 mm long; membranous; 1 -veined. Upper glume primary vein smooth. Upper glume lateral veins absent. Upper glume apex obtuse; mucronate, or awned; 1 -awned. Upper glume awn 0.5-1 mm long.
    Florets
    Fertile lemma linear; subterete; 4.5-6 mm long; 1-1.3 mm wide; coriaceous; without keel; 3 -veined. Lemma surface scaberulous; rough above. Lemma margins convolute; covering most of palea. Lemma apex awned; 1 -awned. Principal lemma awn geniculate; with twisted column. Column of lemma awn 6-10 mm long. Palea 0.5-0.7 mm long.
    Flowers
    Lodicules 2; 1-1.2 mm long. Anthers 3; 3-4 mm long.
    Distribution
    North America: Mexico.
    Reference
    Aristideae. Sanchez & Davila 2004.

    Distribution

    Native to:

    Mexico Southwest

    Aristida tuitensis Sánchez-Ken & Dávila appears in other Kew resources:

    First published in Novon 5: 190 (1995)

    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