1. Family: Poaceae Barnhart
    1. Genus: Heteropogon Pers.
      1. Heteropogon triticeus (R.Br.) Stapf ex Craib

        This species is accepted, and its native range is Hainan to Tropical Asia and Queensland.

    [GB]
    Habit
    Perennial; caespitose. Culms erect; 100-160 cm long; 4-8 mm diam. Culm-internodes solid. Culm-nodes constricted; brown, or black. Lateral branches fastigiate. Leaves cauline. Leaf-sheaths keeled. Ligule an eciliate membrane; 1 mm long; membranous; truncate. Collar glabrous. Leaf-blades 20-80 cm long; 3-11 mm wide. Leaf-blade midrib evident. Leaf-blade surface ribbed; scaberulous. Leaf-blade margins ciliate; hairy at base. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence composed of racemes. Peduncle smooth. Racemes 1; single; erect; 9-14 cm long; bearing 5-7(-10) fertile spikelets on each. Rhachis fragile at the nodes; glabrous on margins. Rhachis internodes cuneate; 0.5-1 mm long. Rhachis internode tip oblique. Spikelets appressed; in pairs. Fertile spikelets sessile; 2 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels 0.5-1 mm long; 0.1 length of fertile spikelet; smooth.
    Sterile
    Basal sterile spikelets well-developed; 16-40 in number; subsessile and pedicelled; larger than fertile. Basal sterile spikelet glumes coriaceous; scabrous on margins; lower glume muticous. Companion sterile spikelets well-developed; male; elliptic; asymmetrical; dorsally compressed; 21-25 mm long; longer than fertile; separately deciduous. Companion sterile spikelet callus linear; 2-3 mm long. Companion sterile spikelet glumes herbaceous, or coriaceous; eglandular; winged on margins; distinctly veined; smooth, or tuberculate; acute; muticous. Companion sterile spikelet lemmas 2; enclosed by glumes.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 13-15 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus linear; 4.5-6 mm long; bearded; base pungent; attached obliquely. Spikelet callus hairs dark brown, or red; 0.3 length of spikelet. Basal sterile spikelets well-developed; 16-40 in number; subsessile and pedicelled; larger than fertile. Basal sterile spikelet glumes coriaceous; scabrous on margins; lower glume muticous. Companion sterile spikelets well-developed; male; elliptic; asymmetrical; dorsally compressed; 21-25 mm long; longer than fertile; separately deciduous. Companion sterile spikelet callus linear; 2-3 mm long. Companion sterile spikelet glumes herbaceous, or coriaceous; eglandular; winged on margins; distinctly veined; smooth, or tuberculate; acute; muticous. Companion sterile spikelet lemmas 2; enclosed by glumes.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 13-15 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus linear; 4.5-6 mm long; bearded; base pungent; attached obliquely. Spikelet callus hairs dark brown, or red; 0.3 length of spikelet.
    Glume
    Glumes dissimilar; with lower wider than upper; exceeding apex of florets; firmer than fertile lemma. Lower glume linear; 1 length of spikelet; coriaceous; dark brown; without keels; 9 -veined. Lower glume surface grooved on either side of midvein; puberulous, or pubescent. Lower glume apex obtuse. Upper glume linear; symmetrical; coriaceous; with membranous margins; dark brown; without keels; winged on margins; 3 -veined. Upper glume surface puberulous, or pubescent. Upper glume muticous.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic; 1 length of fertile lemma; hyaline; 0 -veined; without midvein; without lateral veins. Fertile lemma linear, or oblong; membranous; 3 -veined. Lemma apex entire; awned; 1 -awned. Principal lemma awn geniculate; 120-140 mm long overall; with twisted column. Column of lemma awn hirtellous. Palea absent or minute.
    Flowers
    Anthers 3; 8 mm long. Stigmas 2.
    Distribution
    Asia-temperate: China. Asia-tropical: India, Indo-China, Malesia, and Papuasia. Australasia: Australia.
    Reference
    Andropogoneae. TB.

    Images

    Distribution

    Native to:

    Hainan, India, Jawa, Laos, Lesser Sunda Is., Malaya, Myanmar, New Guinea, Philippines, Queensland, Sri Lanka, Sulawesi, Thailand, Vietnam

    Heteropogon triticeus (R.Br.) Stapf ex Craib appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Aug 18, 1986 Brown, R. [s.n.], Australia K000911720 Unknown type material
    Aug 18, 1986 Brown, R. [6179], Australia K000911721 Unknown type material
    Aug 18, 1986 Brown, R. [6179], Australia K000911722
    Jan 1, 1912 Wallich, N. [8801], India K000245945 isotype
    Jan 1, 1912 Thwaites, G.H.K. [3804], Sri Lanka K000245944 isotype
    Jan 1, 1912 Thwaites, G.H.K. [3804], Sri Lanka K000245943 isotype
    Kerr, A.F.G. [20602], Thailand K000620594
    Kerr, A.F.G. [8091], Thailand K000620596
    Kerr, A.F.G. [833], Thailand K000620597
    Kerr, A.F.G. [833], Thailand K000620598
    Sorensen, Th. [5722], Thailand K000688906
    Smitinand, T. [3991], Thailand K000688907
    Put [1959], Thailand K000620595
    Cuming, H. [1003], Philippines K000290016
    Lazarides, M. [7425], Thailand K000688912
    Bunchuai, K. [695], Thailand K000688908
    Lindhard, E. [s.n.], Thailand K000688909
    Lindhard, E. [s.n.], Thailand K000688910
    van Beusekom C.F. [4411], Thailand K000688913
    van Beusekom C.F. [4411], Thailand K000688911
    Thwaites, G.H.K. [3804] K000911726
    Cumming [s.n.], Philippines K000911723
    s.coll. [s.n.] K000911724
    s.coll. [3804] K000911725

    First published in Bull. Misc. Inform. Kew 1912: 432 (1912)

    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.
    • 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.
    • Dassanayake (ed.) (1994). A Revised Handbook to the Flora of Ceylon 8: 1-458. Oxford & IBH Publishing Co. PVT. LTD., New Delhi, Calcutta.
    • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.
    • Henty, E.E. (1969). A manual of the grasses of New Guinea: 1-215. Division of Botany, Dpt. of Forests, LAE, New Guinea.

    Literature

    Kew Backbone Distributions
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Dassanayake (ed.) (1994). A Revised Handbook to the Flora of Ceylon 8: 1-458. Oxford & IBH Publishing Co. PVT. LTD., New Delhi, Calcutta.
    • Henty, E.E. (1969). A manual of the grasses of New Guinea: 1-215. Division of Botany, Dpt. of Forests, LAE, New Guinea.

    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 2019. 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 2019. 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