1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum luzonense J.Presl

        This species is accepted, and its native range is Tropical & Subtropical Asia to NW. Pacific.

    [GB]
    Habit
    Annual. Culms geniculately ascending; 10-120 cm long; without nodal roots, or rooting from lower nodes. Culm-nodes pubescent. Leaf-sheaths without keel; hispid; with tubercle-based hairs; outer margin hairy. Ligule a fringe of hairs; 1.5-2 mm long. Collar pubescent. Leaf-blades linear, or lanceolate; 18-25 cm long; 6-15 mm wide. Leaf-blade surface glabrous to hirsute; hairy on both sides. Leaf-blade margins smooth, or scaberulous; tuberculate-ciliate; hairy at base. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; 15-50 cm long. Primary panicle branches ascending, or spreading. Panicle branches smooth, or scaberulous; with scattered hairs, or glabrous; glabrous in axils, or pubescent in axils. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic, or oblong; dorsally compressed; 1.5-2.6 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic, or oblong; dorsally compressed; 1.5-2.6 mm long; falling entire.
    Glume
    Glumes dissimilar; shorter than spikelet, or reaching apex of florets; thinner than fertile lemma. Lower glume ovate; clasping; 0.5-1.1 mm long; 0.33-0.5 length of spikelet; membranous; without keels; 3-9 -veined. Lower glume apex obtuse, or acute. Upper glume ovate; 1.3-1.8 mm long; 0.8-1 length of spikelet; membranous; without keels; 7-9 -veined. Upper glume apex obtuse, or acute.
    Florets
    Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1.5-2.6 mm long; 1 length of spikelet; membranous; 5-9 -veined; obtuse, or acute. Palea of lower sterile floret 1 length of lemma. Fertile lemma elliptic; dorsally compressed; 1.3-2.2 mm long; indurate; shiny; without keel; 5 -veined. Lemma margins involute. Lemma apex obtuse. Palea involute; indurate.
    Flowers
    Anthers 3; 1 mm long.
    Fruits
    Caryopsis with adherent pericarp; obovoid; 1.4 mm long.
    Distribution
    Asia-temperate: China and eastern Asia. Asia-tropical: India, Indo-China, Malesia, and Papuasia. Australasia: Australia. Pacific: northwestern.
    Reference
    Paniceae. Fl Ceyl 1996.

    Images

    Distribution

    Native to:

    Andaman Is., Assam, Bangladesh, Borneo, Cambodia, Caroline Is., China South-Central, China Southeast, Hainan, Jawa, Laos, Malaya, Maluku, Marianas, Myanmar, New Guinea, Nicobar Is., Philippines, Solomon Is., Sri Lanka, Taiwan, Thailand, Vietnam

    Panicum luzonense J.Presl appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Kerr, A.F.G. [7849], Thailand K000620818
    Kerr, A.F.G. [7849], Thailand K000620819
    Kerr, A.F.G. [19579], Thailand K000620820
    Kerr, A.F.G. [19579], Thailand K000620821
    Kerr, A.F.G. [4491], Thailand K000620825
    Kerr, A.F.G. [7295], Thailand K000620826
    Kerr, A.F.G. [16098], Thailand K000620828
    Kerr, A.F.G. [16098], Thailand K000620827
    Kerr, A.F.G. [19328], Thailand K000620829
    Kerr, A.F.G. [19328], Thailand K000620830
    Kerr, A.F.G. [19328], Thailand K000620831
    Kerr, A.F.G. [19675], Thailand K000620832
    Kerr, A.F.G. [19682], Thailand K000620833
    Larsen, K. [9864], Thailand K000682809
    Larsen, K. [2752], Thailand K000682810
    Larsen, K. [850], Thailand K000682811
    Larsen, K. [30759], Thailand K000682812
    Larsen, K. [31942], Thailand K000682813
    Smitinand, T. [2837], Thailand K000682816
    Smitinand, T. [5831], Thailand K000682817
    Put [36], Thailand K000620822
    Put [2162], Thailand K000620823
    Put [2162], Thailand K000620824
    Charoenphol, Ch. [3789], Thailand K000682814
    Godefroy [62], Cambodia K000290303 syntype
    den Hoed, G. [464], Thailand K000682807
    Floto, F. [7310], Thailand K000682815
    Snan [715], Thailand K000682808
    Thwaites, G. H. K. [3890], Sri Lanka K000245242
    Thwaites, G. H. K. [3890], Sri Lanka K000245241

    First published in C.B.Presl, Reliq. Haenk. 1: 308 (1830)

    Accepted by

    • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
    • Newman, M., Ketphanh, S., Svengsuksa, B., Thomas, P., Sengdala, K., Lamxay, V. & Armstrong, K. (2007). A checklist of the vascular plants of Lao PDR: 1-394. Royal Botanic Gardens, Edinburgh.
    • 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.
    • Turner, I.M. (1995 publ. 1997). A catalogue of the Vascular Plants of Malaya Gardens' Bulletin Singapore 47(2): 347-655.

    Literature

    Kew Backbone Distributions
    • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
    • Ahmed, Z.U. (ed.) (2008). Encyclopedia of Flora and Fauna of Bangladesh 12: 1-505. Asiatic Society of Bangladesh.
    • Pandey, R.P. & Dilwakar, P.G. (2008). An integrated check-list flora of Andaman and Nicobar islands, India Journal of Economic and Taxonomic Botany 32: 403-500.
    • 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.
    • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.
    • Gilliland, H.B. (1971). A revised flora of Malaya 3: 1-319. The Royal Botanic Gardens, Singapore.
    • Henty, E.E. (1969). A manual of the grasses of New Guinea: 1-215. Division of Botany, Dpt. of Forests, LAE, New Guinea.
    • Masamune, G. (1942). Enumeratio phanerogamarum Bornearum: 1-739. Taihoku, Formosa.
    • 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.
    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