1. Family: Poaceae Barnhart
    1. Arctagrostis Griseb.

      1. This genus is accepted, and its native range is Subarctic to Mongolia and Canada.

    [GB]

    nonem

    Habit
    Perennial. Rhizomes elongated. Culms 15-120 cm long. Ligule an eciliate membrane.
    Inflorescences
    Inflorescence a panicle. Panicle open, or contracted. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets elliptic; laterally compressed; 2.5-6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.
    Fertile
    Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets elliptic; laterally compressed; 2.5-6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.
    Glume
    Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.75 length of upper glume; hyaline; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 0.75 length of adjacent fertile lemma; hyaline; 1-keeled; 1 -veined. Upper glume apex acute.
    Florets
    Fertile lemma oblong; membranous; much thinner above; keeled; 3 -veined. Lemma lateral veins obscure; less than two thirds length of lemma. Lemma surface scaberulous. Lemma apex obtuse. Palea 1 length of lemma; 2 -veined. Palea keels scaberulous.
    Flowers
    Anthers 3. Ovary glabrous.
    Distribution
    Europe, or Temperate Asia, or North America.

    Images

    Distribution

    Native to:

    Alaska, Alberta, Aleutian Is., Amur, British Columbia, Buryatiya, Chita, Finland, Greenland, Irkutsk, Kamchatka, Kazakhstan, Khabarovsk, Krasnoyarsk, Labrador, Magadan, Manitoba, Mongolia, North European Russi, Northwest Territorie, Norway, Nunavut, Ontario, Québec, Svalbard, Tuva, West Siberia, Yakutskiya, Yukon

    Arctagrostis Griseb. appears in other Kew resources:

    First published in C.F.von Ledebour, Fl. Ross. 4: 434 (1852)

    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 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