1. Family: Poaceae Barnhart
    1. Genus: Perotis Aiton
      1. Perotis rara R.Br.

        This species is accepted, and its native range is Indo-China to SE. China and Australia.

    [GB]
    Habit
    Annual. Culms erect, or geniculately ascending; 15-35 cm long. Culm-nodes glabrous. Leaves cauline. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs bearded. Ligule a fringe of hairs. Leaf-blades lanceolate; 2-5 cm long; 2-3 mm wide. Leaf-blade surface glabrous. Leaf-blade margins ciliate.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; multilateral; 10-20 cm long. Spikelet packing crowded, or contiguous; irregular. Spikelets ascending, or spreading, or deflexed; solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear, or lanceolate; subterete; 7-9 mm long; falling entire. Spikelet callus linear; 0.5-0.7 mm long; pubescent; base pungent.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear, or lanceolate; subterete; 7-9 mm long; falling entire. Spikelet callus linear; 0.5-0.7 mm long; pubescent; base pungent.
    Glume
    Glumes similar; exceeding apex of florets; firmer than fertile lemma. Lower glume linear; 7-9 mm long; 1 length of upper glume; membranous; without keels; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume margins ciliolate. Lower glume apex acuminate; awned; 1 -awned. Lower glume awn 30-40 mm long. Upper glume linear; 7-9 mm long; 2-3.5 length of adjacent fertile lemma; membranous; without keels; 1 -veined. Upper glume primary vein distinct; scaberulous. Upper glume lateral veins absent. Upper glume margins ciliolate. Upper glume apex acuminate; awned; 1 -awned. Upper glume awn 30-40 mm long.
    Florets
    Fertile lemma lanceolate; 2-4 mm long; hyaline; without keel; 1 -veined. Lemma apex obtuse. Palea hyaline; 0 -veined; without keels.
    Flowers
    Anthers 3; 0.3 mm long.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Asia-temperate: China and eastern Asia. Asia-tropical: Indo-China, Malesia, and Papuasia. Australasia: Australia.
    Reference
    Cynodonteae. Tothill.

    Images

    Distribution

    Native to:

    China Southeast, Hainan, Lesser Sunda Is., Malaya, New Guinea, New South Wales, Northern Territory, Philippines, Queensland, South Australia, Taiwan, Thailand, Vietnam, Western Australia

    Perotis rara R.Br. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Oct 1, 1993 Brown, R. [6149], Queensland K000674330 isolectotype
    Kerr, A.F.G. [15079], Thailand K000621647
    Kerr, A.F.G. [15079], Thailand K000621648
    Kerr, A.F.G. [15079], Thailand K000621649
    Fortune [89], China K000674255
    Brown, R. [4299], Australia K000674331
    Brown, R. [s.n.], Australia K000674332
    Clement, E. [s.n.], Western Australia K000674249
    Fung, H. [20264], Hainan K000674251
    Wallich, N. [3787], China K000674254
    s.coll. [s.n.], China K000674253 Unknown type material
    Vachell, G. H. [38], China K000674252 Unknown type material

    First published in Prodr. Fl. Nov. Holland.: 172 (1810)

    Accepted by

    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Mallett, K. (ed.) (2005). Flora of Australia 44B: 1-486. Australian Government Publishing Service, Canberra.
    • Henty, E.E. (1969). A manual of the grasses of New Guinea: 1-215. Division of Botany, Dpt. of Forests, LAE, New Guinea.

    Literature

    Kew Backbone Distributions
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Mallett, K. (ed.) (2005). Flora of Australia 44B: 1-486. Australian Government Publishing Service, Canberra.

    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