1. Family: Poaceae Barnhart
    1. Genus: Poa L.
      1. Poa palustris L.

        This species is accepted, and its native range is Temp. Northern Hemisphere.

    [GB]
    Habit
    Perennial; caespitose. Butt sheaths herbaceous. Culms erect, or geniculately ascending, or decumbent; 30-150 cm long; 3-4 -noded. Culm-internodes terete; smooth. Lateral branches lacking. Leaves mostly basal. Leaf-sheaths keeled; smooth. Ligule an eciliate membrane; 2-5 mm long; obtuse, or acute. Leaf-blades 5-20 cm long; 2-4 mm wide; flaccid. Leaf-blade surface scaberulous; glabrous. Leaf-blade margins scaberulous. Leaf-blade apex abruptly acute.
    Inflorescences
    Inflorescence a panicle. Panicle open; oblong, or ovate; effuse; equilateral, or nodding; 10-30 cm long; 5-15 cm wide. Primary panicle branches spreading; 3-6 -nate. Panicle branches flexuous; scaberulous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1-5 mm long.
    Spikelets
    Spikelets comprising 2-5 fertile florets; with diminished florets at the apex. Spikelets oblong, or ovate; laterally compressed; 3-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; obscured by lemmas; smooth. Floret callus woolly.
    Fertile
    Spikelets comprising 2-5 fertile florets; with diminished florets at the apex. Spikelets oblong, or ovate; laterally compressed; 3-5 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes definite; obscured by lemmas; smooth. Floret callus woolly.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 2-3 mm long; 0.8-1 length of upper glume; membranous; 1-keeled; 1-3 -veined. Lower glume primary vein scabrous. Lower glume apex acuminate. Upper glume elliptic, or ovate; 2.5-3 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume apex acuminate.
    Florets
    Fertile lemma ovate; oblong in profile; 2.5-3 mm long; membranous; much thinner above; much thinner on margins; keeled; 5 -veined. Lemma midvein ciliolate; hairy below. Lemma lateral veins stopping well short of apex. Lemma margins ciliolate; hairy below. Lemma apex acute. Palea 1 length of lemma. Palea keels scabrous. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; membranous. Anthers 3; 1.3-3.5 mm long.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform.
    Distribution
    Europe: northern, central, southwestern, southeastern, and eastern. Asia-temperate: Siberia, Soviet far east, Soviet Middle Asia, Caucasus, China, Mongolia, and eastern Asia. Asia-tropical: India. Australasia: New Zealand. North America: Subarctic, western Canada, eastern Canada, northwest USA, north-central USA, northeast USA, southwest USA, south-central USA, and southeast USA. South America: southern South America.
    Reference
    Poeae. CEH.

    Images

    Distribution

    Native to:

    Alaska, Albania, Alberta, Aleutian Is., Altay, Amur, Arizona, Austria, Baltic States, Belarus, Belgium, British Columbia, Bulgaria, Buryatiya, California, Central European Rus, China North-Central, China Southeast, Chita, Colorado, Connecticut, Czechoslovakia, Delaware, Denmark, District of Columbia, East European Russia, Finland, France, Germany, Great Britain, Greece, Greenland, Hungary, Illinois, Indiana, Inner Mongolia, Iowa, Iran, Irkutsk, Italy, Kamchatka, Kazakhstan, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Kriti, Krym, Kuril Is., Labrador, Magadan, Maine, Manchuria, Manitoba, Maryland, Masachusettes, Michigan, Minnesota, Mississippi, Missouri, Mongolia, Montana, Nebraska, Netherlands, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, Newfoundland, North Carolina, North Caucasus, North Dakota, North European Russi, Northwest European R, Northwest Territorie, Norway, Nova Scotia, Nunavut, Ohio, Ontario, Oregon, Pennsylvania, Poland, Primorye, Prince Edward I., Québec, Rhode I., Romania, Sakhalin, Saskatchewan, South Carolina, South Dakota, South European Russi, Sweden, Switzerland, Tadzhikistan, Tennessee, Transcaucasus, Turkmenistan, Tuva, Ukraine, Utah, Uzbekistan, Vermont, Virginia, Washington, West Siberia, West Virginia, Wisconsin, Wyoming, Xinjiang, Yakutskiya, Yugoslavia, Yukon

    Introduced into:

    Argentina South, Chile Central, Chile South, Ireland, Japan, Kerguelen, New Zealand North, New Zealand South, West Himalaya

    Poa palustris L. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Hungary K000641219
    Alaska K000633971
    Alaska K000633972
    s.coll. [49], France K000641221
    Seemann [s.n.] K000633970
    Thuillier [s.n.] K000641220
    Degen, A. [s.n.], Hungary K000641222

    First published in Syst. Nat. ed. 10, 2: 874 (1759)

    Accepted by

    • Kavousi, M., Assadi, M. & Nejadsattari, T. (2015). Taxonomic revision of the genus Poa L. in Iran, new additions to Flora Iranica, and a new identification key Turkish Journal of Botany 39: 105-127.
    • Chang, C.S., Kim, H. & Chang, K.S. (2014). Provisional checklist of vascular plants for the Korea peninsula flora (KPF): 1-660. DESIGNPOST.
    • Meyer, F.K. (2011). Beiträge zur Flora von Albanien Haussknechtia, Beih. 15: 1-220.
    • Edgar, E & Connor, H.E. (2010). Flora of New Zealand, ed. 2, 5: 1-650. R.E.Owen, Government Printer, Wellington.
    • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348.
    • Grubov, V.I. (2008). Key to the vascular plants of Mongolia (with an atlas) 2: 1-503. Academy of Sciences, Mongolian People's Republic, Ulaan Bator.
    • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Takhtajan, A.L. (ed.) (2006). Conspectus Florae Caucasi 2: 1-466. Editio Universitatis Petropolitanae.
    • Frenot, Y., Chown, S.L., Whinam, J., Selkirk, P.M., Convey, P., Skotnicki, M. & Bergstrom,D.M. (2005). Biological invasions in the Antarctic: extent, impacts and implications Biological Reviews of the Cambridge Philosophical Society 80: 45-72.
    • Malyschev, L.I. & Peschkova, G.A. (eds.) (2001). Flora of Siberia 2: 1-362. Scientific Publishers, Inc., Enfield, Plymouth.
    • Fedorov, A.A. (ed.) (1999). Flora of Russia. The European part and bordering regions 1: 1-546. A.A. Balkema, Rotterdam, Broekfield.
    • Lee, W.T. (1996). Lineamenta Florae Koreae: 1-1688. Soul T'ukpyolsi: Ak'ademi Sojok.
    • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.
    • Koyama, T. (1987). Grasses of Japan and its neighboring regions: an identification manual: 1-570. Kodansha, Tokyo, Japan.
    • Kharkevich, S.S., Probatova, N.S. & Novikov, V.S. (1985). Sosudistye rasteniia sovetskogo Dal’nego Vostoka 1: 1-383. Izd-vo "Nauka," Leningradskoe otd-nie, Leningrad.
    • Cope, T.A. (1982). Flora of Pakistan 143: 1-678. Department of Botany, University of Karachi, Karachi.
    • Tutin, T.G. & al. (eds.) (1980). Flora Europaea 5: 1-452. Cambridge University Press.

    Literature

    Kew Backbone Distributions
    • Kavousi, M., Assadi, M. & Nejadsattari, T. (2015). Taxonomic revision of the genus Poa L. in Iran, new additions to Flora Iranica, and a new identification key Turkish Journal of Botany 39: 105-127.
    • von Raab-Straube, E. (ed.) (2012-continuously updated). The Euro+Med PlantBase - the information resource for Euro-Mediterranean plant diversity http://ww2.bgbm.org/EuroPlusMed/query.asp.
    • Meyer, F.K. (2011). Beiträge zur Flora von Albanien Haussknechtia, Beih. 15: 1-220.
    • Edgar, E & Connor, H.E. (2010). Flora of New Zealand, ed. 2, 5: 1-650. R.E.Owen, Government Printer, Wellington.
    • Zuloaga, F.O., Morrone, O. , Belgrano, M.J., Marticorena, C. & Marchesi, E. (eds.) (2008). Catálogo de las Plantas Vasculares del Cono Sur Monographs in Systematic Botany from the Missouri Botanical Garden 107: 1-3348.
    • Grubov, V.I. (2008). Key to the vascular plants of Mongolia (with an atlas) 2: 1-503. Academy of Sciences, Mongolian People's Republic, Ulaan Bator.
    • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
    • Takhtajan, A.L. (ed.) (2006). Conspectus Florae Caucasi 2: 1-466. Editio Universitatis Petropolitanae.
    • Frenot, Y., Chown, S.L., Whinam, J., Selkirk, P.M., Convey, P., Skotnicki, M. & Bergstrom,D.M. (2005). Biological invasions in the Antarctic: extent, impacts and implications Biological Reviews of the Cambridge Philosophical Society 80: 45-72.
    • Malyschev, L.I. & Peschkova, G.A. (eds.) (2001). Flora of Siberia 2: 1-362. Scientific Publishers, Inc., Enfield, Plymouth.
    • Fedorov, A.A. (ed.) (1999). Flora of Russia. The European part and bordering regions 1: 1-546. A.A. Balkema, Rotterdam, Broekfield.
    • Lee, W.T. (1996). Lineamenta Florae Koreae: 1-1688. Soul T'ukpyolsi: Ak'ademi Sojok.
    • Koyama, T. (1987). Grasses of Japan and its neighboring regions: an identification manual: 1-570. Kodansha, Tokyo, Japan.
    • Kharkevich, S.S., Probatova, N.S. & Novikov, V.S. (1985). Sosudistye rasteniia sovetskogo Dal’nego Vostoka 1: 1-383. Izd-vo "Nauka," Leningradskoe otd-nie, Leningrad.
    • Cope, T.A. (1982). Flora of Pakistan 143: 1-678. Department of Botany, University of Karachi, Karachi.
    • Tutin, T.G. & al. (eds.) (1980). Flora Europaea 5: 1-452. Cambridge University Press.
    • Hultén, E.O.G. (1960). Flora of the Aleutian Islands and westernmost Alaska Peninsula: with notes on the flora of Commander Islands, ed. 2: 1-376. Weinheim : J. Cramer ; New York : Hafner Pub. Co.
    • Ovczinnikov, P.N. (ed.) (1957). Flora Tadzhikskoi SSR 1: 1-547. Izd-vo Akademii nauk SSSR, Moskva.
    • Roshevitz, R.J. & al. (eds.) (1950). Flora Kirgizskoi SSR 2: 1-315. Frunze : Izd-vo KirgizFAN SSSR.
    • Merkodovich, N.A. (ed.) (1941). Flora Uzbekistana 1: 1-566. Izd-va Akademii nauk Uzbekskoi SSR, Tashkent.
    • Fedtschenko, B.A. & al. (1932). Flora Turkmenii 1: 1-340. Turkmenskoe gosudarstvennoe izd., Ashkhabad.

    Sources

    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 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