1. Family: Poaceae Barnhart
    1. Glyceria R.Br.

      1. This genus is accepted, and its native range is Temp. & Subtropical.

    [GB]

    nonem

    Habit
    Annual (1), or perennial (45). Rhizomes absent (31), or short (2), or elongated (15). Stolons absent (44), or present (2). Culms erect (18/37), or geniculately ascending (14/37), or decumbent (15/37), or prostrate (3/37); robust (1/2), or weak (1/2); 10-76.9-250 cm long; spongy (2), or firm (44); without nodal roots (2/12), or rooting from lower nodes (12/12). Lateral branches lacking (2/2). Leaf-sheaths tubular for much of their length (33/33). Ligule an eciliate membrane. Leaf-blades membranous (1), or herbaceous (45); stiff (2), or firm (43), or flaccid (1). Leaf-blade midrib conspicuous (1/1). Leaf-blade venation without cross veins (44), or with obscure cross veins (1), or with distinct cross veins (1). Leaf-blade margins cartilaginous (1/1).
    Inflorescences
    Inflorescence a panicle; exserted (44), or embraced at base by subtending leaf (4). Panicle open (39), or contracted (7). Spikelets appressed (4/7), or ascending (4/7); solitary. Fertile spikelets sessile (1), or pedicelled (45). Pedicels filiform (1/1).
    Spikelets
    Spikelets comprising 2-7-20 fertile florets; with diminished florets at the apex. Spikelets linear (10), or lanceolate (8), or elliptic (5), or oblong (29), or ovate (10); laterally compressed (42), or subterete (5); 3-12.56-40 mm long; persistent on plant (1), or breaking up at maturity (45); disarticulating below each fertile floret (45/45). Rhachilla internodes glabrous (45), or pubescent (1). Floret callus glabrous (4/4).
    Fertile
    Spikelets comprising 2-7-20 fertile florets; with diminished florets at the apex. Spikelets linear (10), or lanceolate (8), or elliptic (5), or oblong (29), or ovate (10); laterally compressed (42), or subterete (5); 3-12.56-40 mm long; persistent on plant (1), or breaking up at maturity (45); disarticulating below each fertile floret (45/45). Rhachilla internodes glabrous (45), or pubescent (1). Floret callus glabrous (4/4).
    Glume
    Glumes persistent (45/45); shorter than spikelet; thinner than fertile lemma (1), or similar to fertile lemma in texture (45). Lower glume lanceolate (21), or elliptic (3), or oblong (16), or ovate (12); 0.33-0.6816-0.9 length of upper glume; hyaline (2), or membranous (44); without keels; 1 -veined (42/43), or 3-5 -veined (1/43). Lower glume lateral veins absent (42), or distinct (4). Lower glume surface glabrous (45), or puberulous (1). Lower glume apex entire (43), or erose (4); obtuse (24/42), or acute (21/42). Upper glume lanceolate (19), or elliptic (3), or oblong (19), or ovate (12); 0.25-0.7402-1.3 length of adjacent fertile lemma; hyaline (2), or membranous (44); with undifferentiated margins (34), or hyaline margins (11), or scarious margins (1); without keels; 1 -veined (41/43), or 2 -veined (1/43), or 3 -veined (2/43), or 5 -veined (1/43). Upper glume surface glabrous (45), or puberulous (1). Upper glume apex entire (43), or erose (4); obtuse (26/42), or acute (20/42).
    Florets
    Fertile lemma lanceolate (6), or elliptic (6), or oblong (24), or ovate (15), or obovate (2), or flabellate (1); membranous (45), or coriaceous (1); of similar consistency above (19), or much thinner above (27); of similar consistency on margins (39), or much thinner on margins (7); without keel (45), or keeled (1); 5-6 -veined (1/40), or 7 -veined (39/40), or 11 -veined (1/40). Lemma lateral veins obscure (3/19), or with distinct primaries but obscure intermediates (2/19), or distinct (2/19), or prominent (12/19); extending close to apex (1/1). Lemma surface smooth (20), or asperulous (4), or scaberulous (18), or scabrous (5), or tuberculate (1); glabrous (45), or puberulous (1). Lemma apex entire (34), or erose (9), or dentate (4); 2 -fid (1/4), or 3 -fid (3/4), or 4-5 -fid (1/4); truncate (1/42), or obtuse (30/42), or acute (11/42), or acuminate (2/42), or attenuate (1/42). Palea 0.9-1.011-1.2 length of lemma; 2 -veined. Palea keels unthickened (45), or thickened (1); wingless (33), or winged (13); smooth (36), or scaberulous (7), or scabrous (3); eciliate (43), or ciliolate (3). Palea surface glabrous (45), or puberulous (1). Palea apex entire (1/14), or erose (1/14), or dentate (13/14). Apical sterile florets resembling fertile though underdeveloped (45), or distinct from fertile (1); 1 in number (1/1); barren (1/1); cuneate (1/1).
    Flowers
    Lodicules 2 (39/39); united (39/39); fleshy (39/39); truncate (39/39). Anthers 2 (5/39), or 3 (35/39).
    Fruits
    Caryopsis with adherent pericarp (43/43); ellipsoid (7/12), or oblong (5/12), or ovoid (1/12); laterally compressed (2/3), or dorsally compressed (1/3); rugose (1/1). Embryo 0.2 length of caryopsis. Hilum linear (36/36); 1 length of caryopsis.
    Distribution
    Europe (11), or Africa (3), or Temperate Asia (23), or Tropical Asia (4), or Australasia (9), or Pacific (1), or North America (18), or South America (6), or Antarctica (1).

    Images

    Distribution

    Native to:

    Afghanistan, Alabama, Alaska, Albania, Alberta, Algeria, Altay, Amur, Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Arkansas, Assam, Austria, Azores, Baltic States, Belarus, Belgium, Brazil South, British Columbia, Bulgaria, Buryatiya, California, Canary Is., Central European Rus, Chile Central, Chile South, China North-Central, China South-Central, China Southeast, Chita, Colombia, Colorado, Connecticut, Corse, Czechoslovakia, Delaware, Denmark, District of Columbia, East Aegean Is., East European Russia, East Himalaya, Finland, Florida, France, Føroyar, Georgia, Germany, Great Britain, Greece, Guatemala, Hungary, Iceland, Idaho, Illinois, India, Indiana, Inner Mongolia, Iowa, Iran, Iraq, Ireland, Irkutsk, Italy, Japan, Kamchatka, Kansas, Kazakhstan, Kentucky, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Krym, Kuril Is., Labrador, Lebanon-Syria, Louisiana, Madeira, Magadan, Maine, Manchuria, Manitoba, Maryland, Masachusettes, Mexico Central, Mexico Northeast, Mexico Northwest, Mexico Southwest, Michigan, Minnesota, Mississippi, Missouri, Mongolia, Montana, Morocco, Myanmar, Nansei-shoto, Nebraska, Nepal, Netherlands, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New South Wales, New York, Newfoundland, North Carolina, North Caucasus, North Dakota, North European Russi, Northwest European R, Northwest Territorie, Norway, Nova Scotia, Nunavut, Ohio, Oklahoma, Ontario, Oregon, Pakistan, Palestine, Pennsylvania, Poland, Portugal, Primorye, Prince Edward I., Québec, Rhode I., Romania, Sakhalin, Sardegna, Saskatchewan, Sicilia, South Australia, South Carolina, South Dakota, South European Russi, Spain, Sweden, Switzerland, Tadzhikistan, Taiwan, Tasmania, Tennessee, Texas, Tibet, Transcaucasus, Tristan da Cunha, Tunisia, Turkey, Turkey-in-Europe, Turkmenistan, Tuva, Ukraine, Uruguay, Utah, Uzbekistan, Vermont, Victoria, Virginia, Washington, West Himalaya, West Siberia, West Virginia, Western Australia, Wisconsin, Wyoming, Xinjiang, Yakutskiya, Yugoslavia, Yukon

    Introduced into:

    Chatham Is., Costa Rica, Ecuador, Hawaii, New Zealand North, New Zealand South, Peru, Queensland

    Glyceria R.Br. appears in other Kew resources:

    First published in Prodr. Fl. Nov. Holland.: 179 (1810)

    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