1. Family: Poaceae Barnhart
    1. Genus: Dichanthium Willemet
      1. Dichanthium micranthum Cope

        This species is accepted, and its native range is Oman.

    [GB]
    Habit
    Perennial; caespitose. Culms erect, or geniculately ascending; 15-20 cm long. Culm-internodes smooth; distally glabrous. Culm-nodes bearded. Lateral branches ample. Ligule a ciliolate membrane. Leaf-blades flat, or conduplicate; 5-10 cm long; 1.5-2.5 mm wide; pruinose. Leaf-blade apex acute.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; 1-2 cm long. Rhachis fragile at the nodes; subterete; ciliate on margins. Rhachis hairs 0.5-0.8 mm long. Rhachis internodes filiform. Rhachis internode tip oblique; flat. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels filiform; without a translucent median line; ciliate; with 0.2-0.5 mm long hairs.
    Spikelets
    Companion sterile spikelets well-developed; containing empty lemmas; obovate; 2.5-3 mm long; longer than fertile; persistent. Companion sterile spikelet glumes coriaceous; keeled; 5-9 -veined; pitted; pilose (on keel). Companion sterile spikelet lemmas enclosed by glumes; muticous. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2-2.5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; attached obliquely. Spikelet callus hairs 0.5-0.8 mm long; 0.25 length of spikelet.
    Sterile
    Companion sterile spikelets well-developed; containing empty lemmas; obovate; 2.5-3 mm long; longer than fertile; persistent. Companion sterile spikelet glumes coriaceous; keeled; 5-9 -veined; pitted; pilose (on keel). Companion sterile spikelet lemmas enclosed by glumes; muticous.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2-2.5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; attached obliquely. Spikelet callus hairs 0.5-0.8 mm long; 0.25 length of spikelet.
    Glume
    Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 1 length of spikelet; cartilaginous; without keels; 4 -veined. Lower glume primary vein ciliate. Lower glume surface concave; pitted; glabrous. Lower glume apex acute. Upper glume lanceolate; 1 length of spikelet; without keels. Upper glume apex acute.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret hyaline. Fertile lemma linear; hyaline; without keel. Lemma apex entire; awned; 1 -awned. Principal lemma awn apical; geniculate; 16-22 mm long overall; with twisted column. Column of lemma awn puberulous. Palea absent or minute.
    Flowers
    Anthers 3; 1.25-2 mm long.
    Distribution
    Asia-temperate: Arabia.
    Reference
    Andropogoneae. TAC 1997.

    Images

    Distribution

    Dichanthium micranthum Cope appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1977 Fitzgerald, D.V. [12316], Oman K001050469 holotype
    Jan 1, 1977 Fitzgerald, D.V. [12316], Oman K001050470 isotype

    First published in Publ. Cairo Univ. Herb. 78: 325 (1977)

    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.
    • Ghazanfar, S.A. (1992). An Annotated Catalogue of the Vascular Plants of Oman and their Vernacular names Scripta Botanica Belgica 2: 1-153.

    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

    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