1. Family: Poaceae Barnhart
    1. Ophiuros C.F.Gaertn.

      1. This genus is accepted, and its native range is NE. Tropical Africa, Tropical & Subtropical Asia to N. Australia.

    [GB]

    nonem

    Habit
    Annual (2), or perennial (2). Culms erect (1/1); robust (2/2); 25-163.1-400 cm long. Lateral branches ample (1/1). Ligule an eciliate membrane. Leaf-blades linear (1), or lanceolate (2), or elliptic (1). Leaf-blade venation without cross veins (3), or with obscure cross veins (1). Leaf-blade margins cartilaginous (1/1).
    Inflorescences
    Synflorescence simple (1), or compound (3); fastigiate (1/3), or fasciculate (2/3). Inflorescence composed of racemes; terminal and axillary; subtended by an unspecialized leaf-sheath (1), or a spatheole (3); exserted (3), or embraced at base by subtending leaf (1). Spatheole linear (3/3). Peduncle widened at apex (3/3). Racemes single; bilateral. Rhachis fragile at the nodes; subcylindrical and excavated. Spikelet packing abaxial; 2 -rowed. Rhachis internodes oblong. Rhachis internode tip transverse; crateriform. Spikelets sunken; in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels fused to internode.
    Sterile
    Companion sterile spikelets represented by barren pedicels.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 2-3.009-4 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base truncate; with central peg; attached transversely. Companion sterile spikelets represented by barren pedicels.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 2-3.009-4 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base truncate; with central peg; attached transversely.
    Glume
    Glumes reaching apex of florets; firmer than fertile lemma. Lower glume oblong; coriaceous; without keels (2), or 2-keeled (2); wingless (3), or winged on keel (1); 7 -veined (3), or 8 -veined (2), or 9 -veined (3). Lower glume surface smooth, or cancellate (1), or areolate (2). Lower glume apex obtuse. Upper glume elliptic; membranous; 1-2 -veined (2), or 3 -veined. Upper glume apex obtuse.
    Florets
    Basal sterile florets male (1), or barren (3); with palea. Lemma of lower sterile floret lanceolate (2), or oblong (1), or ovate (1); hyaline; 2 -veined (1/1). Fertile lemma linear (1), or lanceolate (2), or ovate (1); hyaline; without keel; 0 -veined (1/1). Palea hyaline.
    Flowers
    Anthers 3 (2/2).
    Distribution
    Africa (1), or Temperate Asia (1), or Tropical Asia (3), or Australasia (1).

    Images

    Distribution

    Native to:

    Assam, Bangladesh, China South-Central, China Southeast, East Himalaya, Eritrea, Ethiopia, Hainan, India, Jawa, Laccadive Is., Laos, Lesser Sunda Is., Malaya, Myanmar, Nansei-shoto, Nepal, New Guinea, Northern Territory, Pakistan, Philippines, Queensland, Sri Lanka, Sudan, Thailand, Vietnam, Western Australia

    Ophiuros C.F.Gaertn. appears in other Kew resources:

    First published in Suppl. Carp.: 3 (1805)

    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