1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida tricornis H.Scholz & P.König

        This species is accepted, and its native range is Saudi Arabia to Yemen.

    [GB]
    Habit
    Perennial; caespitose. Culms 5-20 cm long. Ligule a fringe of hairs. Leaf-blades involute; 1-5 cm long; 1 mm wide; coriaceous; stiff. Leaf-blade surface ribbed.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; linear, or oblong; 2-8 cm long; contracted about primary branches. Primary panicle branches appressed, or ascending; simple; 1-2 cm long; bearing spikelets almost to the base. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 6-7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1 mm long; pubescent; with longer hairs above; acute.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 6-7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1 mm long; pubescent; with longer hairs above; acute.
    Glume
    Glumes persistent; similar; reaching apex of florets, or shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 4.5-6.5 mm long; 0.8-0.9 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 5.5-7 mm long; 0.9-1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate; subterete; 6-7 mm long; coriaceous; without keel; 3 -veined. Lemma surface scaberulous; rough in lines. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn spreading; flat below (0.5-0.6mm wide); stiff; pungent; with 10-20 mm long limb; without a column; persistent. Lateral lemma awns spreading as much as principal; 8-15 mm long; shorter than principal. Palea without keels.
    Flowers
    Anthers 3.
    Distribution
    Asia-temperate: Arabia.
    Reference
    Aristideae. TAC.

    Distribution

    Native to:

    Saudi Arabia, Yemen

    Aristida tricornis H.Scholz & P.König appears in other Kew resources:

    First published in Willdenowia 17: 111 (1988)

    Accepted by

    • Cope, T.A., Knees, S.G. & Miller, A.G. (2007). Flora of the Arabian peninsula and Socotra 5(1): 1-387. Edinburgh University Press.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Cope, T.A., Knees, S.G. & Miller, A.G. (2007). Flora of the Arabian peninsula and Socotra 5(1): 1-387. Edinburgh University Press.

    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