1. Family: Poaceae Barnhart
    1. Genus: Aristida L.
      1. Aristida pennei Chiov.

        This species is accepted, and its native range is Eritrea, Arabian Peninsula.

    [GB]
    Habit
    Perennial; caespitose. Culms 2-20 cm long. Ligule a fringe of hairs. Leaf-blades aciculate; involute; 1-10 cm long; 1-2 mm wide; glaucous. Leaf-blade surface ribbed.
    Inflorescences
    Inflorescence a panicle. Panicle contracted; oblong; 3-10 cm long. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 9-10.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1.2 mm long; pubescent; acute.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 9-10.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1.2 mm long; pubescent; acute.
    Glume
    Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 6.5-7.5 mm long; 0.7 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute; muticous, or awned; 1 -awned. Lower glume awn 0-1 mm long. Upper glume linear; 9-10.5 mm long; 1.1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute; awned; 1 -awned. Upper glume awn 1-2 mm long.
    Florets
    Fertile lemma lanceolate; subterete; 8-9 mm long; coriaceous; without keel; 3 -veined. Lemma surface smooth, or scabrous. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; flat below; with 17-27 mm long limb; without a column; persistent. Lateral lemma awns 17-27 mm long; subequal to principal. Palea 0.25 length of lemma; without keels.
    Flowers
    Anthers 3.
    Distribution
    Africa: northeast tropical. Asia-temperate: Arabia.
    Reference
    Aristideae. TAC.

    Distribution

    Native to:

    Eritrea, Saudi Arabia, Yemen

    Aristida pennei Chiov. appears in other Kew resources:

    First published in Ann. Bot. (Rome) 2: 366 (1905)

    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.
    • Wood, J.R.I. (1997). A Handbook of the Yemen Flora: 1-434. The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Hedberg, I. & Edwards, S. (eds.) (1995). Flora of Ethiopia and Eritrea 7: 1-430. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.

    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.
    • Hedberg, I. & Edwards, S. (eds.) (1995). Flora of Ethiopia and Eritrea 7: 1-430. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.

    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