1. Family: Poaceae Barnhart
    1. Genus: Microstegium Nees
      1. Microstegium somae (Hayata) Ohwi

        This species is accepted, and its native range is China (Anhui, Fujian), Nansei-shoto to Taiwan.

    [GB]
    Habit
    Annual; mat forming. Culms rambling; 30-40 cm long; rooting from lower nodes. Culm-nodes bearded. Leaf-sheaths outer margin hairy. Ligule an eciliate membrane; 0.2-0.5 mm long. Leaf-blade base broadly rounded. Leaf-blades lanceolate, or ovate; 3-4 cm long; 6 mm wide. Leaf-blade surface glabrous. Leaf-blade apex acute.
    Inflorescences
    Inflorescence composed of racemes. Racemes 2-7; digitate; drooping; flexuous; 3-8 cm long. Central inflorescence axis 1-3 cm long. Rhachis tough; glabrous on margins. Rhachis internodes filiform; 1-1.2 length of fertile spikelet. Spikelets in pairs. Fertile spikelets pedicelled; 2 in the cluster. Pedicels filiform; terete; unequal; 1-1.5 mm long, or 2.5-3 mm long; glabrous.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 4-5 mm long; falling entire. Spikelet callus pilose, or bearded; base obtuse; attached transversely. Spikelet callus hairs 0.25-0.33 length of spikelet.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 4-5 mm long; falling entire. Spikelet callus pilose, or bearded; base obtuse; attached transversely. Spikelet callus hairs 0.25-0.33 length of spikelet.
    Glume
    Glumes dissimilar; firmer than fertile lemma. Lower glume oblong; 1 length of spikelet; cartilaginous; 2-keeled; keeled above; 4 -veined. Lower glume primary vein scaberulous. Lower glume surface concave; scabrous. Lower glume apex dentate; 2 -fid. Upper glume elliptic; 1 length of spikelet; cartilaginous; 1-keeled. Upper glume surface scabrous. Upper glume apex dentate; 2 -fid; awned; 1 -awned. Upper glume awn 2-10 mm long.
    Florets
    Basal sterile florets male; with palea. Lemma of lower sterile floret lanceolate; 2 mm long; hyaline; dentate; 2 -fid; awned. Awn of lower sterile floret flexuous; 2-10 mm long. Fertile lemma linear; 1.7-2 mm long; hyaline; without keel. Lemma apex entire; emarginate; awned; 1 -awned. Principal lemma awn apical; flexuous; 12 mm long overall. Palea absent or minute.
    Flowers
    Anthers 2; 0.6-0.8 mm long.
    Distribution
    Asia-temperate: China and eastern Asia.
    Reference
    Andropogoneae. Fl China 2004.

    Distribution

    Native to:

    China Southeast, Nansei-shoto, Taiwan

    Microstegium somae (Hayata) Ohwi appears in other Kew resources:

    First published in Acta Phytotax. Geobot. 11: 155 (1942)

    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.

    Literature

    Kew Backbone Distributions
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Walker, E.H. (1976). Flora of Okinawa and the southern Ryukyu islands: 1-1159. Smithsonian Institution Press, Washington D.C., U.S.A.

    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 2018. 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 2018. 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