1. Family: Poaceae Barnhart
    1. Genus: Sporobolus R.Br.
      1. Sporobolus diandrus (Retz.) P.Beauv.

        This species is accepted, and its native range is Socotra, S. Arabian Peninsula, W. Indian Ocean, Tropical & Subtropical Asia.

    [GB]
    Habit
    Perennial; caespitose. Butt sheaths herbaceous. Culms erect; 30-90 cm long. Ligule a fringe of hairs. Leaf-blades flat, or convolute; 10-25 cm long; 2-4 mm wide. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence a panicle. Panicle open; lanceolate; 10-15 cm long; 2-4 cm wide; contracted about primary branches. Primary panicle branches spreading; bearing spikelets almost to the base. Panicle branches glabrous in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels linear.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 1.2-1.6 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 1.2-1.6 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes deciduous; similar; shorter than spikelet; thinner than fertile lemma. Lower glume oblong; 0.5-0.6 length of upper glume; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume oblong; 0.5-0.66 length of adjacent fertile lemma; hyaline; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex obtuse, or acute.
    Florets
    Fertile lemma ovate; 1.5-1.8 mm long; membranous; without keel; 1 -veined. Lemma apex acute. Palea 1 length of lemma; 2 -veined. Palea keels approximate.
    Flowers
    Anthers 2; 0.4 mm long.
    Fruits
    Caryopsis with free soft pericarp; oblong, or obovoid; 0.8-1 mm long.
    Distribution
    Africa: Macaronesia, northeast tropical, and western Indian ocean. Asia-temperate: Arabia, China, and eastern Asia. Asia-tropical: India, Indo-China, Malesia, and Papuasia. Pacific: southwestern, south-central, northwestern, and north-central. South America: Mesoamericana.
    Reference
    Eragrostideae. Gr Maur.

    Images

    Distribution

    Native to:

    Assam, Bangladesh, Borneo, China South-Central, China Southeast, East Himalaya, India, Jawa, Laos, Lesser Sunda Is., Madagascar, Malaya, Maluku, Mauritius, Myanmar, Nansei-shoto, Nepal, New Guinea, Oman, Pakistan, Philippines, Seychelles, Socotra, South China Sea, Sri Lanka, Sulawesi, Sumatera, Taiwan, Thailand, Vietnam, West Himalaya

    Introduced into:

    Belize, Caroline Is., Cook Is., Fiji, Gilbert Is., Hawaii, Marianas, Marquesas, Marshall Is., Nauru, New Caledonia, Nicaragua, Nicobar Is., Ogasawara-shoto, Samoa, Society Is., Solomon Is., Tokelau-Manihiki, Tonga, Tuamotu, Tubuai Is., Vanuatu

    Sporobolus diandrus (Retz.) P.Beauv. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Oct 18, 1933 Wight, R [1744], India K000245142
    Nov 1, 1929 s.coll. [s.n.], India K000907385 Unknown type material
    Kerr, A.F.G. [4422], Thailand K000621551
    Kerr, A.F.G. [843], Thailand K000621552
    Kerr, A.F.G. [10710], Thailand K000621553
    Kerr, A.F.G. [11260], Thailand K000621554
    Kerr, A.F.G. [11260], Thailand K000621555
    Kerr, A.F.G. [11314], Thailand K000621556
    Kerr, A.F.G. [11314], Thailand K000621557
    Kerr, A.F.G. [13699], Thailand K000621558
    Kerr, A.F.G. [13699], Thailand K000621559
    Kerr, A.F.G. [13699], Thailand K000621560
    Kerr, A.F.G. [19657], Thailand K000621561
    Kerr, A.F.G. [19657], Thailand K000621562
    Sorensen, Th. [3691], Thailand K000682614
    Larsen, K. [634], Thailand K000682616
    Williams, L. [17265], Thailand K000682615
    Lazarides, M. [7429], Thailand K000682613
    Marcan, A. [2102], Thailand K000621563
    Jacquemont, V. [352], India K000907356
    Aug 6, 2009 Sorensen, Th. [830], Thailand Sporobolus indicus var. flaccidus K000648123
    Aug 6, 2009 Sorensen, Th. [1343], Thailand Sporobolus indicus var. flaccidus K000648124
    Sorensen, Th. [1784], Thailand Sporobolus indicus var. flaccidus K000648125

    First published in Ess. Agrostogr.: 26 (1812)

    Accepted by

    • Bosser, J. & Renvoize, S.A. (2018). Flore des Mascareignes 203: 1-276. IRD Éditions, MSIRI, RBG-Kew, Paris.
    • Sykes, W.R. (2016). Flora of the Cook Islands: 1-973. National Tropical Botanical Garden, Hawaii.
    • Dobignard, A. & Chatelain, C. (2013). Index synonymique de la flore d'Afrique du nord 5: 1-451. Éditions des conservatoire et jardin botaniques, Genève.
    • Kumar, S. (2012). Herbaceous flora of Jaunsar-Bawar (Uttarkhand), India: enumerations Phytotaxonomy 12: 33-56.
    • Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.
    • Maliya, S.D. & Datt, B. (2010). A contribution to the flora of Katarniyaghat wildlife sanctuary, Baharaich district, Uttar Pradesh Journal of Economic and Taxonomic Botany 34: 42-68.
    • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
    • Kandwal, M.K. & Gupta, B.K. (2009). An update on grass flora of Uttarkhand Indian Journal of Forestry 32: 657-668.
    • Ahmed, Z.U. (ed.) (2008). Encyclopedia of Flora and Fauna of Bangladesh 12: 1-505. Asiatic Society of Bangladesh.
    • Cope, T.A., Knees, S.G. & Miller, A.G. (2007). Flora of the Arabian peninsula and Socotra 5(1): 1-387. Edinburgh University Press.
    • 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.
    • Miller, A.G. & Morris, M. (2004). Ethnoflora of Soqotra Archipelago: 1-759. The Royal Botanic Garden, Edinburgh.
    • 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.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
    • Stevens, W.D., Ulloa U., C., Pool, A. & Montiel, O.M. (2001). Flora de Nicaragua Monographs in Systematic Botany from the Missouri Botanical Garden 85: i-xlii, 1-2666.
    • Noltie, H.J. (2000). Flora of Bhutan 3(2): 457-883. Royal Botanic Gardens, Edinburgh.
    • Press, J.R. et al. (2000). Annotated Checklist of the Flowering Plants of Nepal: i-x, 1-430. Natural History Museum, London.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.
    • Dassanayake (ed.) (1994). A Revised Handbook to the Flora of Ceylon 8: 1-458. Oxford & IBH Publishing Co. PVT. LTD., New Delhi, Calcutta.
    • Robertson, S.A. (1989). Flowering Plants of Seychelles: 1-327. Royal Botanic Gardens, Kew.
    • Koyama, T. (1987). Grasses of Japan and its neighboring regions: an identification manual: 1-570. Kodansha, Tokyo, Japan.
    • Cope, T.A. (1982). Flora of Pakistan 143: 1-678. Department of Botany, University of Karachi, Karachi.
    • Walker, E.H. (1976). Flora of Okinawa and the southern Ryukyu islands: 1-1159. Smithsonian Institution Press, Washington D.C., U.S.A.
    • Gilliland, H.B. (1971). A revised flora of Malaya 3: 1-319. The Royal Botanic Gardens, Singapore.
    • Bor, N.L. (1970). Flora Iranica 70: 1-573. Naturhistorisches Museums Wien.
    • 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
    • Sykes, W.R. (2016). Flora of the Cook Islands: 1-973. National Tropical Botanical Garden, Hawaii.
    • Maliya, S.D. & Datt, B. (2010). A contribution to the flora of Katarniyaghat wildlife sanctuary, Baharaich district, Uttar Pradesh Journal of Economic and Taxonomic Botany 34: 42-68.
    • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
    • Kandwal, M.K. & Gupta, B.K. (2009). An update on grass flora of Uttarkhand Indian Journal of Forestry 32: 657-668.
    • 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.
    • Datta, B.K., Saha, R. Roy, M. & Majumder, K. (2008). Grasses of West Tripura district, Tripura, India Pleione 2: 98-105.
    • Cope, T.A., Knees, S.G. & Miller, A.G. (2007). Flora of the Arabian peninsula and Socotra 5(1): 1-387. Edinburgh University Press.
    • 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.
    • Miller, A.G. & Morris, M. (2004). Ethnoflora of Soqotra Archipelago: 1-759. The Royal Botanic Garden, Edinburgh.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
    • Stevens, W.D., Ulloa U., C., Pool, A. & Montiel, O.M. (2001). Flora de Nicaragua Monographs in Systematic Botany from the Missouri Botanical Garden 85: i-xlii, 1-2666.
    • Noltie, H.J. (2000). Flora of Bhutan 3(2): 457-883. Royal Botanic Gardens, Edinburgh.
    • Press, J.R. et al. (2000). Annotated Checklist of the Flowering Plants of Nepal: i-x, 1-430. Natural History Museum, London.
    • Thaman, R.R., Fosberg, F.R., Manner, H.I. & Hassall, D.C. (1994). The Flora of Nauru Atoll Research Bulletin 392: 1-223.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.
    • Dassanayake (ed.) (1994). A Revised Handbook to the Flora of Ceylon 8: 1-458. Oxford & IBH Publishing Co. PVT. LTD., New Delhi, Calcutta.
    • Robertson, S.A. (1989). Flowering Plants of Seychelles: 1-327. Royal Botanic Gardens, Kew.
    • Kobayashi, S. & Ono, M. (1987). A Revised List of Vascular Plants Indigenous and Introduced to the Bonin (Ogasawara) and the Volcano (Kazan) Islands Ogasawara Research 13: 1-55.
    • Walker, E.H. (1976). Flora of Okinawa and the southern Ryukyu islands: 1-1159. Smithsonian Institution Press, Washington D.C., U.S.A.
    • Gilliland, H.B. (1971). A revised flora of Malaya 3: 1-319. The Royal Botanic Gardens, Singapore.
    • Bor, N.L. (1970). Flora Iranica 70: 1-573. Naturhistorisches Museums Wien.
    • Henty, E.E. (1969). A manual of the grasses of New Guinea: 1-215. Division of Botany, Dpt. of Forests, LAE, New Guinea.
    • Hubbard, C.E. & Vaughan, R.E. (1940). Grasses of Mauritius and Rodriguez: 1-128. Crown Agents for the Colonies, London.
    • 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