1. Family: Poaceae Barnhart
    1. Torreyochloa Church

      1. This genus is accepted, and its native range is Russian Far East to Japan, Alaska to U.S.A.

    [GB]

    nonem

    Habit
    Perennial. Rhizomes absent (2), or elongated (1). Culms erect (1), or geniculately ascending (1), or rambling (1); slender (1/1); 10-30-50 cm long. Ligule an eciliate membrane.
    Inflorescences
    Inflorescence a panicle. Panicle open. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 3 fertile florets (2), or 4 fertile florets, or 5-6 fertile florets (1); with diminished florets at the apex. Spikelets oblong, or ovate (1); laterally compressed; 2-4.083-6 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Fertile
    Spikelets comprising 3 fertile florets (2), or 4 fertile florets, or 5-6 fertile florets (1); with diminished florets at the apex. Spikelets oblong, or ovate (1); laterally compressed; 2-4.083-6 mm long; breaking up at maturity; disarticulating below each fertile floret.
    Glume
    Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.75 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume ovate; 0.3-0.5033-0.66 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex obtuse.
    Florets
    Fertile lemma elliptic (2), or oblong (1); chartaceous; without keel; 7 -veined. Lemma lateral veins ribbed; excurrent (1/2), or extending close to apex (1/2). Lemma surface scaberulous. Lemma apex erose; truncate (1), or obtuse. Palea 2 -veined. Palea keels smooth (1), or scaberulous (2). Apical sterile florets resembling fertile though underdeveloped.
    Fruits
    Caryopsis with adherent pericarp (1/1); ellipsoid (1/1). Hilum punctiform.
    Distribution
    Temperate Asia (2), or North America (2).

    Distribution

    Native to:

    Alaska, Alberta, Amur, Arizona, British Columbia, California, Colorado, Connecticut, Delaware, Georgia, Idaho, Illinois, Indiana, Japan, Kamchatka, Kentucky, Khabarovsk, Korea, Kuril Is., Labrador, Magadan, Maine, Manitoba, Maryland, Masachusettes, Michigan, Minnesota, Missouri, Montana, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, Newfoundland, North Carolina, Nova Scotia, Ohio, Ontario, Oregon, Pennsylvania, Primorye, Prince Edward I., Québec, Rhode I., Sakhalin, Saskatchewan, South Carolina, South Dakota, Tennessee, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, Yukon

    Torreyochloa Church appears in other Kew resources:

    First published in Amer. J. Bot. 36: 163 (1949)

    Accepted by

    • Govaerts, R. (2019). World Checklist of Vascular Plants (WCVP Database) The Board of 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 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