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  1. Family: Poaceae Barnhart
    1. Genus: Polytoca R.Br.
      1. Polytoca semiteres Benth. ex Hook.f.

        This species is accepted, and its native range is W. & S. India, Myanmar.

    [GB]
    Habit
    Annual. Culms decumbent; 30-70 cm long. Ligule an eciliate membrane; 3 mm long. Leaf-blades 5-20 cm long; 5-9 mm wide.
    Inflorescences
    Monoecious; with male and female spikelets in the same inflorescence. Inflorescence composed of racemes; terminal and axillary; subtended by a spatheole; embraced at base by subtending leaf. Spatheole lanceolate; 0.75-1.5 cm long; herbaceous. Racemes 1; single; 1-2.25 cm long; bearing few fertile spikelets; bearing 2 fertile spikelets on each. Rhachis fragile at the nodes; subterete. Rhachis internodes columnar; bearing a sterile companion laterally. Rhachis internode tip transverse; crateriform. Sexes segregated; on bisexual branches; with male above. Spikelets embracing internode; in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Male spikelets sessile and pedicelled; 2 in a cluster. Pedicels fused to internode; united wholly.
    Spikelets
    Companion sterile spikelets represented by barren pedicels (and minute vestige). Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 4.75-5.2 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base truncate; with central peg; attached transversely. Male spikelets distinct from female; with pedicels fused to rhachis; 2 flowered; lanceolate; 8-9 mm long. Male spikelet glumes 2.
    Sterile
    Companion sterile spikelets represented by barren pedicels (and minute vestige).
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 4.75-5.2 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base truncate; with central peg; attached transversely.
    Glume
    Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume elliptic; 1 length of spikelet; indurate; pallid; 2-keeled; keeled above; keeled laterally; winged on keel; winged above. Lower glume surface not waisted. Lower glume apex obtuse. Upper glume oblong; cartilaginous.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; hyaline; 3 -veined. Fertile florets female. Fertile lemma oblong; hyaline; without keel; 1 -veined. Palea hyaline; 0 -veined; without keels.
    Flowers
    Anthers 3; 4.2-4.5 mm long.
    Male
    Male spikelets distinct from female; with pedicels fused to rhachis; 2 flowered; lanceolate; 8-9 mm long. Male spikelet glumes 2.
    Distribution
    Asia-tropical: India and Indo-China.
    Reference
    Andropogoneae. Patunkar.

    Images

    Distribution

    Native to:

    India, Myanmar

    Synonyms

    Other Data

    Polytoca semiteres Benth. ex Hook.f. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jun 1, 1998 Wight, R. [3318], Tamil Nadu Chionachne semiteres K000246051 Unknown type material
    Jun 1, 1998 Wight, R. [3318], India Chionachne semiteres K001057014

    Bibliography

    First published in Fl. Brit. India 7: 101 (1896)

    Not accepted by

    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew. [Cited as Chionachne semiteres.]

    Literature

    Kew Backbone Distributions

    • 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