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  1. Family: Poaceae Barnhart

    1. Coleanthus Seidel ex Roem. & Schult.

        2. This genus is accepted, and its native range is Europe to Russian Far East and E. China, W. Canada to NW. U.S.A.

    [GB]

    nonem

    Habit
    Annual. Culms decumbent; 2-5 cm long. Ligule an eciliate membrane.
    Inflorescences
    Inflorescence a panicle. Panicle glomerate. Primary panicle branches whorled at most nodes. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; 0.415-0.6 mm long; falling entire.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; 0.415-0.6 mm long; falling entire.
    Glume
    Glumes both absent or obscure.
    Florets
    Fertile lemma ovate; hyaline; keeled; 1 -veined. Lemma midvein scabrous. Lemma apex acute; awned; 1 -awned. Palea 1 length of lemma; hyaline; 2 -veined. Palea keels scabrous. Palea apex with excurrent keel veins.
    Flowers
    Lodicules absent. Anthers 2.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid; laterally compressed. Embryo 0.25 length of caryopsis. Hilum elliptic.
    Distribution
    Europe, or Temperate Asia, or North America.
    [GB]

    nonem

    Habit
    Annual (1), or perennial (1). Rhizomes absent (1), or short (1). Stolons absent, or present (1). Culms erect (1), or geniculately ascending (1), or decumbent (1), or prostrate (1); 8-54.5-90 cm long; firm (1), or wiry (1). Ligule a fringe of hairs. Leaf-blades without exudate (1), or viscid.
    Inflorescences
    Inflorescence a panicle. Panicle open, or contracted. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 3-7 fertile florets; with diminished florets at the apex. Spikelets obovate; laterally compressed; 10-13-17 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Floret callus bearded; acute.
    Fertile
    Spikelets comprising 3-7 fertile florets; with diminished florets at the apex. Spikelets obovate; laterally compressed; 10-13-17 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Floret callus bearded; acute.
    Glume
    Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume elliptic; 0.6-0.7-0.8 length of upper glume; membranous; without keels; 7-13 -veined. Lower glume surface glabrous, or pubescent. Lower glume apex obtuse, or acute. Upper glume ovate; 0.7-0.825-1 length of adjacent fertile lemma; membranous; without keels; 7-13 -veined. Upper glume surface glabrous, or pubescent. Upper glume apex acute.
    Florets
    Fertile lemma cuneate; coriaceous; much thinner above; without keel; 9 -veined. Lemma surface villous. Lemma apex lobed; 6 -fid; incised 0.33 of lemma length; awned; 5 -awned. Principal lemma awn from a sinus. Lateral lemma awns subequal to principal. Palea 0.5 length of lemma. Palea keels ciliolate. Palea surface villous. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2. Anthers 3.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform.
    Distribution
    Africa.

    Images

    Distribution

    Native to:

    Austria, British Columbia, China Southeast, Czechoslovakia, France, Germany, Khabarovsk, Manchuria, Northwest European R, Oregon, Washington, West Siberia

    Extinct in:

    Belarus, Italy, Norway

    Coleanthus Seidel ex Roem. & Schult. appears in other Kew resources:

    First published in Syst. Veg., ed. 15 bis 3: 267 (1818)

    Accepted by

    • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/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