1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida californica Thurb.

        This species is accepted, and its native range is California to Arizona and NW. Mexico.

    [GB]
    Habit
    Perennial; caespitose. Culms 15-30 cm long; wiry. Culm-internodes distally pubescent. Lateral branches ample. Ligule a fringe of hairs. Leaf-blades filiform; involute; 2-5 cm long; 1-2 mm wide.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; linear; 2-9 cm long; bearing few spikelets. Primary panicle branches indistinct the panicle almost racemose, or simple. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 10-16 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1.5-2 mm long; pubescent; pungent.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 10-16 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1.5-2 mm long; pubescent; pungent.
    Glume
    Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 5-8 mm long; 0.5 length of upper glume; membranous; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 10-16 mm long; 2 length of adjacent fertile lemma; membranous; 1 -veined. Upper glume lateral veins absent. Upper glume apex acuminate.
    Florets
    Fertile lemma linear; subterete; 5-7 mm long; coriaceous; purple; without keel; 3 -veined. Lemma surface asperulous; rough above. Lemma margins convolute; covering most of palea. Lemma apex awned; 3 -awned. Principal lemma awn 3-branched; spreading; with 25-45 mm long limb; with twisted column; deciduous; abscissing from top of lemma. Column of lemma awn 15-20 mm long. Lateral lemma awns spreading as much as principal; 25-45 mm long; subequal to principal.
    Flowers
    Anthers 3.
    Distribution
    North America: southwest USA and Mexico.
    Reference
    Aristideae. Gr Baja Cal 1994.

    Images

    Distribution

    Native to:

    Arizona, California, Mexico Northwest

    Aristida californica Thurb. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Parish, S.B. [1549], California K000906129
    Schott, A.C.V. [s.n.], California K000906130

    First published in S.Watson & al., Bot. California 2: 289 (1880)

    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.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

    Literature

    Kew Backbone Distributions
    • GBIF (2008- continuously updated). Global Biodiversity Information Facility http://www.gbif.org/.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

    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.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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