1. Family: Poaceae Barnhart
    1. Genus: Polytoca R.Br.
      1. Polytoca punctata (R.Br.) Hook.f.

        This species is accepted, and its native range is Indo-China to Malesia.

    [GB]
    Habit
    Annual. Culms decumbent; 50-100 cm long; 1-3 mm diam.; rooting from lower nodes. Culm-internodes distally glabrous. Culm-nodes pubescent. Leaf-sheaths 3-14.2 cm long; glabrous on surface, or pilose; with tubercle-based hairs. Leaf-sheath auricles absent. Ligule an eciliate membrane; 1-2 mm long. Leaf-blades linear; 20-70 cm long; 6-15 mm wide. Leaf-blade venation with 6-10 secondary veins. Leaf-blade surface glabrous, or pilose; with tubercle-based hairs. Leaf-blade margins cartilaginous; scaberulous.
    Inflorescences
    Monoecious; with male and female spikelets in the same inflorescence. Inflorescence composed of racemes; axillary; subtended by a spatheole; embraced at base by subtending leaf. Spatheole linear; 1.7-2.8 cm long; herbaceous. Peduncle widened at apex. Racemes 1; single; unilateral; 1.1-2.7 cm long; bearing few fertile spikelets; bearing 1-2 fertile spikelets on each (and 2(-6) male almost enfolded by topmost female spikelet). Rhachis fragile at the nodes; subterete; glabrous on surface. Rhachis internodes linear; 3-5 mm long; bearing a sterile companion laterally. Rhachis internode tip cupuliform. 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 free.
    Sterile
    Companion sterile spikelets rudimentary; shorter than fertile; deciduous with the fertile.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 9-11 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 oblong; 1 length of spikelet; coriaceous; without keels; winged on margins; winged near apex. Lower glume surface smooth; transversely waisted; glabrous. Lower glume apex emarginate. Upper glume elliptic, or ovate; 6-8 mm long; herbaceous, or coriaceous; without keels; 9-15 -veined. Upper glume apex acute.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic, or ovate; 5-6.5 mm long; hyaline; 3 -veined; acute. Fertile florets female. Fertile lemma lanceolate, or oblong, or ovate; 5-5.5 mm long; hyaline; without keel. Lemma apex acute. Palea present; lanceolate, or oblong, or ovate; 4-4.5 mm long; hyaline.
    Fruits
    Caryopsis with adherent pericarp; 2.5-3.5 mm long. Hilum punctiform.
    Spikelets
    Male spikelets resembling female; with pedicels fused to rhachis; obovate (orbicular); 4-6.5 mm long. Male spikelet glumes 2; 16 -veined. Companion sterile spikelets rudimentary; shorter than fertile; deciduous with the fertile. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 9-11 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base truncate; with central peg; attached transversely.
    Male
    Male spikelets resembling female; with pedicels fused to rhachis; obovate (orbicular); 4-6.5 mm long. Male spikelet glumes 2; 16 -veined.
    Distribution
    Asia-tropical: Indo-China and Malesia.
    Reference
    Andropogoneae. Jannik & Veldkamp 2004.

    Distribution

    Doubtfully present in:

    India

    Native to:

    Cambodia, Jawa, Laos, Lesser Sunda Is., Philippines, Thailand, Vietnam

    Polytoca punctata (R.Br.) Hook.f. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Backer [27633], Indonesia Sclerachne punctata K000386913
    s.coll. [8], Indonesia Sclerachne punctata K000386912
    [Mare, M.] [1652], Cambodia Sclerachne punctata K000386910
    Jun 1, 1998 [Veeacts, S.] [10], Indonesia Chionachne punctata K000386911

    First published in Fl. Brit. India 7: 102 (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 punctata.]

    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.
    • Camus, E.G. & Camus, A. in H. Lecomte (1922). Flore Générale de l'indo-Chine 1(3): 193-336.

    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.

    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