1. Family: Poaceae Barnhart
    1. Genus: Euclasta Franch.
      1. Euclasta clarkei (Hack.) Cope

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

    [GB]
    Habit
    Annual. Culms prostrate; 10-45 cm long; rooting from lower nodes. Ligule a ciliate membrane. Leaf-blades 5-7 cm long; 3-5 mm wide.
    Inflorescences
    Inflorescence composed of racemes. Peduncle flexuous. Racemes 1; single; arcuate; 2.5-5 cm long. Rhachis fragile at the nodes; flattened; ciliate on margins. Rhachis internodes linear. Rhachis internode tip transverse. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels linear; flattened; with a translucent median line (also present in internodes); ciliate.
    Sterile
    Basal sterile spikelets well-developed; 4 in number; barren; 4.5-6 mm long; larger than fertile. Basal sterile spikelet glumes glabrous. Companion sterile spikelets well-developed; containing empty lemmas; oblong; 4.5-6 mm long; longer than fertile; separately deciduous. Companion sterile spikelet glumes herbaceous; distinctly veined; 8-11 -veined; scabrous; glabrous; acute. Companion sterile spikelet lemmas enclosed by glumes; muticous.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 3.5-4 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; attached transversely. Basal sterile spikelets well-developed; 4 in number; barren; 4.5-6 mm long; larger than fertile. Basal sterile spikelet glumes glabrous. Companion sterile spikelets well-developed; containing empty lemmas; oblong; 4.5-6 mm long; longer than fertile; separately deciduous. Companion sterile spikelet glumes herbaceous; distinctly veined; 8-11 -veined; scabrous; glabrous; acute. 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; 3.5-4 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; attached transversely.
    Glume
    Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 1 length of spikelet; coriaceous; without keels; keel-less except near apex; winged on margins; winged near apex; 5 -veined. Lower glume surface flat; pilose. Lower glume apex obtuse. Upper glume lanceolate; coriaceous; 1-keeled; 3 -veined. Upper glume apex acute.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; 3.5 mm long; hyaline; 0 -veined; ciliate on margins. Fertile lemma linear; hyaline; without keel; 1 -veined. Lemma apex entire; awned; 1 -awned. Principal lemma awn geniculate; 25 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.
    Flowers
    Anthers 3.
    Distribution
    Asia-temperate: Arabia. Asia-tropical: India.
    Reference
    Andropogoneae. Bor.

    Images

    Distribution

    Native to:

    India, Myanmar, Oman

    Euclasta clarkei (Hack.) Cope appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Clarke, C.B. [33780], Jharkhand K000245673 isotype

    First published in Kew Bull. 35: 704 (1980)

    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.
    • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.

    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.
    • Kress, W.J., DeFilipps, R.A., Farr, E. & Kyi, D.Y.Y. (2003). A Checklist of the Trees, Shrubs, Herbs and Climbers of Myanmar Contributions from the United States National Herbarium 45: 1-590.
    • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.

    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