1. Family: Poaceae Barnhart
    1. Deschampsia P.Beauv.

      1. This genus is accepted, and its native range is Subarctic & Subantarctic to Temp.

    [GB]

    nonem

    Habit
    Annual (4), or perennial (36). Rhizomes absent (37), or short (4), or elongated (2). Culms erect (30/32), or geniculately ascending (1/32), or decumbent (1/32); robust (2/5), or slender (3/5); 2-42.65-200 cm long; firm (38), or wiry (2). Culm-internodes elliptical in section (1/1). Lateral branches lacking (6/6). Ligule an eciliate membrane. Leaf-blades aciculate (1), or filiform (21), or linear (19); herbaceous (37), or coriaceous (4); stiff (13), or firm (26), or flaccid (1). Leaf-blade apex muticous (38), or pungent (4).
    Inflorescences
    Inflorescence a panicle; not deciduous as a whole, or deciduous as a whole (1); exserted (39), or embraced at base by subtending leaf (3), or enclosed (1). Panicle open (31), or contracted (11), or spiciform (2), or glomerate (1). Primary panicle branches not whorled (38), or whorled at lower nodes (1), or whorled at most nodes (1). Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform (11/11).
    Spikelets
    Spikelets comprising 1 fertile florets (1), or 2 fertile florets, or 3 fertile florets (7); without rhachilla extension (1), or with a barren rhachilla extension. Spikelets linear (1), or lanceolate (23), or elliptic (1), or oblong (24), or cuneate (5); laterally compressed; 2.075-5.477-11 mm long; breaking up at maturity; disarticulating below each fertile floret (31), or above glumes but not between florets (9). Rhachilla internodes glabrous (8), or pubescent (4), or pilose (27), or villous (1). Floret callus glabrous (2/37), or pubescent (6/37), or pilose (26/37), or bearded (5/37).
    Fertile
    Spikelets comprising 1 fertile florets (1), or 2 fertile florets, or 3 fertile florets (7); without rhachilla extension (1), or with a barren rhachilla extension. Spikelets linear (1), or lanceolate (23), or elliptic (1), or oblong (24), or cuneate (5); laterally compressed; 2.075-5.477-11 mm long; breaking up at maturity; disarticulating below each fertile floret (31), or above glumes but not between florets (9). Rhachilla internodes glabrous (8), or pubescent (4), or pilose (27), or villous (1). Floret callus glabrous (2/37), or pubescent (6/37), or pilose (26/37), or bearded (5/37).
    Glume
    Glumes persistent; shorter than spikelet (5), or reaching apex of florets (12), or exceeding apex of florets (27); thinner than fertile lemma (1), or similar to fertile lemma in texture (39); parallel to lemmas (35), or gaping (5). Lower glume linear (2), or lanceolate (32), or elliptic (4), or oblong (2), or ovate (5); 0.6-0.941-1 length of upper glume; membranous (39), or chartaceous (1); 1-keeled; 1 -veined (33), or 2 -veined (2), or 3 -veined (9). Lower glume lateral veins absent (33), or obscure (2), or distinct (7). Lower glume surface smooth (38), or asperulous (3). Lower glume apex entire (39), or erose (2); truncate (1), or obtuse (1), or acute (34), or acuminate (5); muticous (39), or mucronate (1). Upper glume linear (1), or lanceolate (8), or elliptic (29), or oblong (1), or ovate (2); 0.66-1.47-3 length of adjacent fertile lemma; membranous (39), or chartaceous (1); with undifferentiated margins (36), or hyaline margins (3), or scarious margins (1); 1-keeled; 1 -veined (7/39), or 2 -veined (5/39), or 3 -veined (37/39). Upper glume primary vein eciliate (39), or ciliolate (1). Upper glume surface smooth (38), or asperulous (5). Upper glume apex entire (39), or erose (2); truncate (1), or obtuse (1), or acute (34), or acuminate (5); muticous (39), or mucronate (1).
    Florets
    Fertile lemma lanceolate (1), or elliptic (2), or oblong (36), or ovate (6); hyaline (1), or membranous (36), or cartilaginous (3); of similar consistency above (37), or much thinner above (3); without keel; 3 -veined (2), or 4 -veined (10), or 5 -veined (30), or 6 -veined (2), or 7 -veined (4). Lemma lateral veins obscure (1/1). Lemma surface smooth (33), or asperulous (6), or scaberulous (4). Lemma apex entire (2), or erose (7), or dentate (36); 2 -fid (9/36), or 3 -fid (3/36), or 4 -fid (28/36), or 5 -fid (1/36); truncate (11/13), or obtuse (3/13); muticous (1), or mucronate (3), or awned (37); 1 -awned (36/37), or 3 -awned (1/37). Principal lemma awn subapical (3), or dorsal (38); straight (25), or geniculate (18). Palea 1 length of lemma; hyaline (2), or membranous (38); 2 -veined (5/5). Palea keels smooth (31), or scaberulous (9); eciliate (33), or puberulous (1), or ciliolate (5), or ciliate (1). Palea apex dentate (6/6).
    Flowers
    Lodicules 2 (38/38); membranous (38/38). Anthers 1-2 (2), or 3 (38). Ovary glabrous (36/36).
    Fruits
    Caryopsis with adherent pericarp; fusiform (3/5), or oblong (2/5). Hilum punctiform (30/31), or linear (1/31); 0.33-0.415-0.5 length of caryopsis.
    Distribution
    Europe (7), or Africa (7), or Temperate Asia (6), or Tropical Asia (5), or Australasia (6), or Pacific (2), or North America (6), or South America (17), or Antarctica (9).
    [FTEA]

    Gramineae, W. D. Clayton, S. M. Phillips And S. A. Renvoize. Flora of Tropical East Africa. 1974

    Habit
    Caespitose perennials or rarely annuals
    Leaves
    Leaf-blades filiform to linear, flat, folded or rolled; ligule often elongated
    Inflorescences
    Inflorescence a spreading (or rarely contracted) panicle, with small shining spikelets
    Spikelets
    Spikelets usually 2-flowered, the florets similar, hermaphrodite; rhachilla disarticulating below each floret, pilose or rarely glabrous, produced as a fine bristle; glumes subequal, mostly acute, keeled, subscarious to membranous with thin shining margins, the lower 1–3-nerved, the upper 3 (rarely 1)-nerved; lemmas lanceolate to oblong, shorter than the glumes or the upper with the tip exserted, scarious-membranous to thinly membranous, obscurely 4–5-nerved, 2-lobed, 4-toothed or lacerate-truncate at the apex, with a straight or geniculate awn from the back; callus minute, obtuse, usually bearded; palea about as long as the lemma, 2-keeled; stamens 3; stigmas 2.
    [GB]

    nonem

    Habit
    Annual. Culms erect, or geniculately ascending; 7-30 cm long. Ligule an eciliate membrane. Leaf-blades filiform.
    Inflorescences
    Inflorescence composed of racemes. Racemes single; bilateral. Rhachis semiterete. Spikelet packing broadside to rhachis. Rhachis internodes linear. Spikelets sunken; solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; laterally compressed; 5-7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.
    Fertile
    Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear; laterally compressed; 5-7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.
    Glume
    Glumes collateral; persistent; exceeding apex of florets; firmer than fertile lemma. Lower glume linear; 1 length of upper glume; chartaceous; 1-keeled; 3 -veined. Lower glume lateral veins ribbed. Lower glume apex acute. Upper glume linear; 1.2 length of adjacent fertile lemma; chartaceous; 1-keeled; 3 -veined. Upper glume lateral veins ribbed. Upper glume apex acute.
    Florets
    Fertile lemma lanceolate; membranous; keeled; 3 -veined. Lemma apex dentate; 2 -fid; awned.
    Flowers
    Anthers 1. Ovary glabrous.
    Distribution
    North America.

    Images

    Distribution

    Native to:

    Afghanistan, Alaska, Albania, Alberta, Aleutian Is., Altay, Amur, Antarctica, Antipodean Is., Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Austria, Azores, Baltic States, Belarus, Belgium, Bolivia, British Columbia, Bulgaria, Buryatiya, California, Cameroon, Canary Is., Central European Rus, Chatham Is., Chile Central, Chile North, Chile South, China North-Central, China South-Central, Chita, Colombia, Colorado, Congo, Connecticut, Crozet Is., Czechoslovakia, Denmark, Dominican Republic, East European Russia, East Himalaya, Ecuador, Ethiopia, Falkland Is., Finland, France, Føroyar, Germany, Great Britain, Greece, Greenland, Gulf of Guinea Is., Hawaii, Heard-McDonald Is., Hungary, Iceland, Idaho, Illinois, Indiana, Inner Mongolia, Iran, Ireland, Irkutsk, Italy, Japan, Kamchatka, Kazakhstan, Kentucky, Kenya, Kerguelen, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Krym, Kuril Is., Labrador, Lesser Sunda Is., Macquarie Is., Madeira, Magadan, Maine, Manchuria, Manitoba, Maryland, Masachusettes, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southwest, Michigan, Minnesota, Mongolia, Montana, Morocco, Nepal, Netherlands, Nevada, New Brunswick, New Guinea, New Hampshire, New Jersey, New Mexico, New South Wales, New York, New Zealand North, New Zealand South, Newfoundland, North Carolina, North Caucasus, North Dakota, North European Russi, Northwest European R, Northwest Territorie, Norway, Nova Scotia, Nunavut, Ohio, Ontario, Oregon, Pakistan, Pennsylvania, Peru, Poland, Portugal, Primorye, Prince Edward I., Qinghai, Québec, Rhode I., Romania, Rwanda, Sakhalin, Saskatchewan, Sicilia, South Carolina, South Dakota, South European Russi, South Georgia, South Sandwich Is., Spain, Svalbard, Sweden, Switzerland, Tadzhikistan, Taiwan, Tanzania, Tasmania, Tibet, Transcaucasus, Tristan da Cunha, Turkey, Turkey-in-Europe, Tuva, Uganda, Ukraine, Utah, Uzbekistan, Venezuela, Vermont, Victoria, Virginia, Washington, West Himalaya, West Siberia, West Virginia, Wisconsin, Wyoming, Xinjiang, Yakutskiya, Yugoslavia, Yukon, Zaïre

    Introduced into:

    Brazil South, Cape Provinces, Caroline Is., Lesotho, Society Is., South Australia

    Deschampsia P.Beauv. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Wallich, N. [Cat. no. 8885], Nepal K001131773
    Wallich, N. [Cat. no. 3802], Nepal K001117239
    Wallich, N. [Cat. no. 3802], Nepal K001117240

    First published in Ess. Agrostogr.: 91 (1812)

    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.

    Literature

    Flora of West Tropical Africa
    • F.T.A. 10: 89 (1937).
    • Ess. Agrost. 91 (1812)
    Flora of Tropical East Africa
    • Ess. Agrost.: 91 (1812)

    Sources

    Flora of Tropical East Africa
    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

    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 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