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  1. Family: Poaceae Barnhart
    1. Genus: Calamagrostis Adans.
      1. Calamagrostis abnormis (Hook.f.) U.Shukla

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

    [GB]
    Habit
    Annual. Culms rambling; slender; 50-100 cm long; wiry. Culm-internodes smooth; distally glabrous. Culm-nodes glabrous. Leaf-sheaths mostly shorter than adjacent culm internode; striately veined; glabrous on surface. Ligule an eciliate membrane; 1-2 mm long. Leaf-blades 6-12 cm long; 2-4 mm wide. Leaf-blade surface scabrous; rough on both sides. Leaf-blade margins scabrous. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence a panicle. Panicle open; elliptic; effuse; 11 cm long; 8 cm wide; bearing few spikelets. Panicle axis smooth; glabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; tip widened.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets elliptic; laterally compressed; 3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 0.5 length of lemma.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets elliptic; laterally compressed; 3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. Floret callus hairs 0.5 length of lemma.
    Glume
    Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; shiny; gaping. Lower glume lanceolate; 3.5 mm long; 1.1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex setaceously attenuate. Upper glume lanceolate; 3 mm long; 1.1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex setaceously attenuate.
    Florets
    Fertile lemma ovate; 2.75 mm long; chartaceous; without keel; 5 -veined. Lemma apex muticous. Palea 1.5 mm long; 0.5 length of lemma; hyaline. Rhachilla extension pilose.
    Flowers
    Lodicules 2; membranous. Anthers 3; 0.5 mm long.
    Fruits
    Caryopsis with adherent pericarp. Hilum linear.
    Distribution
    Asia-temperate: China. Asia-tropical: India.
    Reference
    Aveneae. Bor 2002.
    [GB]
    Habit
    Perennial; caespitose; clumped loosely. Culms erect; 25-40 cm long; 3 -noded. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane; 2 mm long; erose. Leaf-blades erect, or ascending; 4-8 cm long; 1-3 mm wide. Leaf-blade surface scabrous; rough on both sides. Leaf-blade margins scabrous. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence a panicle; embraced at base by subtending leaf. Panicle open; lanceolate; loose; 6-10 cm long; with spikelets clustered towards branch tips. Panicle axis scabrous. Panicle branches scabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 0.5-1 mm long.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets elliptic; laterally compressed; 2 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets elliptic; laterally compressed; 2 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.
    Glume
    Glumes persistent; similar; shorter than spikelet; firmer than fertile lemma; shiny; gaping. Lower glume lanceolate; 2 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 2 mm long; 0.7-0.8 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex acute.
    Florets
    Fertile lemma linear; 2.5 mm long; membranous; without keel; 5 -veined. Lemma apex mucronate. Principal lemma awn subapical; 0.5 mm long overall. Palea 0.75 length of lemma; hyaline. Rhachilla extension glabrous.
    Flowers
    Lodicules 2; membranous. Anthers 3; 0.5 mm long.
    Fruits
    Caryopsis with adherent pericarp. Hilum linear.
    Distribution
    Asia-temperate: China. Asia-tropical: India and Indo-China.
    Reference
    Aveneae. Hitchcock 2002.

    Images

    Distribution

    Native to:

    Assam, China South-Central, East Himalaya, Nepal, Vietnam

    Synonyms

    Other Data

    Calamagrostis abnormis (Hook.f.) U.Shukla appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1996 Griffith [6663], India K000032314 syntype
    Jan 1, 1996 Clarke, C.B. [19027], India K000032317 Unknown type material
    Jun 8, 1999 Hooker, J.D. [1232], India Agrostis petelotii K000032321 Unknown type material
    Jun 8, 1999 Hooker, J.D. [1232], India Agrostis petelotii K000032322 Unknown type material

    Bibliography

    First published in Grasses N.-East India: 45 (1996)

    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.

    Not accepted by

    • Paszko, B. & Soreng, R.J. (2013). Species delimination and name application in Deyeuxia abnormis, Agrostis zenkeri, A. pleiophylla and related taxa (Poaceae: Agrostidinae) Phytotaxa 111: 1-26. [Cited as Deyeuxia abnormis.]

    Literature

    Kew Backbone Distributions

    • Paszko, B. & Soreng, R.J. (2013). Species delimination and name application in Deyeuxia abnormis, Agrostis zenkeri, A. pleiophylla and related taxa (Poaceae: Agrostidinae) Phytotaxa 111: 1-26.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • H?, P.-H. (2000). Câyc? Vi?tnam. An Illustrated flora of Vietnam, ed. 2, 3: 1-1020. Pham-hoang Ho, Montréal.

    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 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