1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida appressa Vasey

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

    [GB]
    Habit
    Perennial; caespitose. Butt sheaths persistent and investing base of culm; with curly dead sheaths. Culms 30-60 cm long. Leaf-sheaths glabrous on surface. Ligule a fringe of hairs. Leaf-blades flat, or involute; 10-35 cm long; 1-4 mm wide.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; linear; equilateral, or nodding; 10-25 cm long. Primary panicle branches appressed, or ascending; 2-10 cm long. Spikelets appressed; solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 12-14 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent; obtuse.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 12-14 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent; obtuse.
    Glume
    Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 9-11 mm long; 0.75 length of upper glume; membranous; 1 -veined. Lower glume lateral veins absent. Lower glume apex setaceously attenuate; muticous, or awned; 1 -awned. Lower glume awn 1-2 mm long. Upper glume lanceolate; 12-14 mm long; 1.2-1.5 length of adjacent fertile lemma; membranous; 1 -veined. Upper glume lateral veins absent. Upper glume apex setaceously attenuate; muticous, or awned; 1 -awned. Upper glume awn 1-2 mm long.
    Florets
    Fertile lemma linear; subterete; 8-12 mm long; coriaceous; without keel; 3 -veined. Lemma margins convolute; covering most of palea. Lemma apex awned; 3 -awned. Principal lemma awn 3-branched; with 15-22 mm long limb; with twisted column. Column of lemma awn (2-)4-8 mm long. Lateral lemma awns 15-22 mm long; subequal to principal.
    Flowers
    Anthers 3.
    Distribution
    North America: Mexico. South America: Mesoamericana.
    Reference
    Aristideae. Fl Nov Gal 1994.

    Distribution

    Native to:

    Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico Central, Mexico Southeast, Mexico Southwest, Nicaragua, Panamá

    Aristida appressa Vasey appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Wynd, F.L. [328], Mexico K000458367

    First published in Contr. U.S. Natl. Herb. 1: 282 (1893)

    Accepted by

    • Nelson Sutherland, C.H. (2008). Catálogo de las plantes vasculares de Honduras. Espermatofitas: 1-1576. SERNA/Guaymuras, Tegucigalpa, Honduras.
    • 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.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.

    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.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.

    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