1. Family: Poaceae Barnhart
    1. Genus: Microstegium Nees
      1. Microstegium petiolare (Trin.) Bor

        This species is accepted, and its native range is Himalaya to China (Yunnan).

    [GB]
    Habit
    Perennial. Culms rambling, or scandent; 60-100(-400) cm long; rooting from lower nodes. Culm-nodes pubescent. Leaf-sheaths outer margin hairy. Ligule an eciliate membrane; 3-6 mm long. Leaf-blade base with a false petiole. Leaf-blades lanceolate, or elliptic; 5-30 cm long; 10-25 mm wide. Leaf-blade surface pilose; sparsely hairy; with tubercle-based hairs. Leaf-blade margins scabrous. Leaf-blade apex acuminate; filiform.
    Inflorescences
    Inflorescence composed of racemes. Peduncle glabrous, or pubescent above. Racemes 8-20; digitate; 6-10 cm long. Rhachis fragile at the nodes; ciliate on margins. Rhachis internodes filiform; 3-4.5 mm long. Spikelets in pairs. Fertile spikelets sessile and pedicelled; 2 in the cluster. Pedicels filiform; angular; ciliate.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 4.5-5 mm long; falling entire; deciduous from the base, or with accessory branch structures. Spikelet callus base obtuse; attached transversely.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 4.5-5 mm long; falling entire; deciduous from the base, or with accessory branch structures. Spikelet callus base obtuse; attached transversely.
    Glume
    Glumes dissimilar; firmer than fertile lemma. Lower glume elliptic; 1 length of spikelet; coriaceous; 2-keeled; keeled obtusely; 6-8 -veined. Lower glume primary vein scabrous. Lower glume surface with a longitudinal median groove; scabrous. Lower glume apex acute. Upper glume oblong; membranous, or chartaceous; 1-keeled; 1-3 -veined. Upper glume primary vein scabrous. Upper glume apex acute; muticous.
    Florets
    Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret linear; 3-4 mm long; hyaline; ciliate on margins; obtuse. Palea of lower sterile floret 0.5-0.66 length of lemma. Fertile lemma oblong; 3 mm long; hyaline; without keel. Lemma apex lobed; 2 -fid; incised 0.5 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 4-6 mm long overall; with twisted column. Palea 1 length of lemma; hyaline. Palea surface pilose; hairy on flanks.
    Flowers
    Lodicules 2. Anthers 3; 2.5-3 mm long.
    Distribution
    Asia-temperate: China. Asia-tropical: India and Indo-China.
    Reference
    Andropogoneae. Bor.

    Images

    Distribution

    Native to:

    Assam, China South-Central, India, Myanmar, Nepal, Thailand, West Himalaya

    Microstegium petiolare (Trin.) Bor appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1938 Strachey, R. [2], India K000245718 isosyntype
    Jan 1, 1938 Wallich, N. [s.n.], Nepal K000943554
    Wallich, N. [8807], Nepal K000245603 isosyntype

    First published in Indian Forest Rec., Bot., n.s., 1: 87 (1938)

    Accepted by

    • Chen, C.H., Veldkamp, J.-F. & Kuoh, C.S. (2012). Taxonomic revision of Microstegium s.str. (Andropogoneae, Poaceae) Blumea 57: 160-189.
    • Kandwal, M.K. & Gupta, B.K. (2009). An update on grass flora of Uttarkhand Indian Journal of Forestry 32: 657-668.
    • 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.
    • Press, J.R. et al. (2000). Annotated Checklist of the Flowering Plants of Nepal: i-x, 1-430. Natural History Museum, London.
    • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.

    Literature

    Kew Backbone Distributions
    • Chen, C.H., Veldkamp, J.-F. & Kuoh, C.S. (2012). Taxonomic revision of Microstegium s.str. (Andropogoneae, Poaceae) Blumea 57: 160-189.
    • Kandwal, M.K. & Gupta, B.K. (2009). An update on grass flora of Uttarkhand Indian Journal of Forestry 32: 657-668.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Press, J.R. et al. (2000). Annotated Checklist of the Flowering Plants of Nepal: i-x, 1-430. Natural History Museum, London.

    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 2018. 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 2018. 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