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

        This species is accepted, and its native range is Europe, Medit. to China.

    [GB]
    Habit
    Perennial; culms solitary, or caespitose. Rhizomes elongated. Culms erect, or geniculately ascending; 10-60 cm long; wiry; 4-6 -noded. Culm-internodes elliptical in section; smooth. Lateral branches lacking. Leaf-sheaths keeled; smooth. Ligule an eciliate membrane; 0.5-3 mm long; obtuse. Leaf-blades flat, or conduplicate; 2-12 cm long; 1-4 mm wide; stiff. Leaf-blade surface smooth, or scaberulous; glabrous. Leaf-blade apex abruptly acute.
    Inflorescences
    Inflorescence a panicle. Panicle open, or contracted; oblong, or ovate; dense, or loose; 1.5-10 cm long; 0.5-3 cm wide. Primary panicle branches ascending; 2-4 -nate; bearing spikelets almost to the base. Panicle branches straight; angular; scaberulous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 0.3-2 mm long.
    Spikelets
    Spikelets comprising 3-10 fertile florets; with diminished florets at the apex. Spikelets elliptic, or oblong, or ovate; laterally compressed; 3-8 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes obscured by lemmas; smooth. Floret callus glabrous, or woolly.
    Fertile
    Spikelets comprising 3-10 fertile florets; with diminished florets at the apex. Spikelets elliptic, or oblong, or ovate; laterally compressed; 3-8 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes obscured by lemmas; smooth. Floret callus glabrous, or woolly.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 2-3 mm long; 0.9-1 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume primary vein scabrous. Lower glume apex acute. Upper glume ovate; 2-3 mm long; 0.9-1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume primary vein scabrous. Upper glume apex acute.
    Florets
    Fertile lemma oblong; oblong in profile; 2.5-3 mm long; membranous; much thinner above; keeled; 5 -veined. Lemma midvein ciliate; hairy below. Lemma lateral veins obscure; stopping well short of apex. Lemma margins ciliate; 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; 1.3-1.5 mm long.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform.
    Distribution
    Europe: northern, central, southwestern, southeastern, and eastern. Africa: north and Macaronesia. Asia-temperate: Siberia, Soviet far east, Caucasus, western Asia, China, and eastern Asia. Asia-tropical: India. Australasia: Australia and New Zealand. Pacific: north-central. North America: Subarctic, western Canada, northwest USA, north-central USA, northeast USA, southwest USA, south-central USA, southeast USA, and Mexico. South America: Caribbean and southern South America.
    Reference
    Poeae. CEH.

    Images

    Distribution

    Native to:

    Albania, Algeria, Austria, Baltic States, Belarus, Belgium, Bulgaria, Central European Rus, China North-Central, China South-Central, China Southeast, Corse, Cyprus, Czechoslovakia, Denmark, East European Russia, Finland, France, Germany, Greece, Hungary, Iran, Italy, Kazakhstan, Krym, Lebanon-Syria, Morocco, Netherlands, North Caucasus, North European Russi, Northwest European R, Norway, Poland, Qinghai, Romania, Sardegna, Sicilia, South European Russi, Spain, Sweden, Switzerland, Transcaucasus, Turkey, Turkey-in-Europe, Ukraine, Xinjiang, Yugoslavia

    Introduced into:

    Alabama, Alaska, Alberta, Altay, Amur, Argentina Northeast, Argentina South, Arizona, Arkansas, British Columbia, California, Chile Central, Chile South, Colorado, Connecticut, Delaware, District of Columbia, Dominican Republic, Georgia, Haiti, Hawaii, Idaho, Illinois, Indiana, Iowa, Ireland, Irkutsk, Jamaica, Japan, Kamchatka, Kansas, Kentucky, Khabarovsk, Korea, Kuril Is., Labrador, Louisiana, Madeira, Magadan, Maine, Manitoba, Maryland, Masachusettes, Mexico Central, Mexico Northeast, Mexico Southwest, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New South Wales, New York, New Zealand North, New Zealand South, Newfoundland, North Carolina, North Dakota, Northwest Territorie, Nova Scotia, Ohio, Oklahoma, Ontario, Oregon, Pennsylvania, Peru, Primorye, Prince Edward I., Québec, Rhode I., Sakhalin, Saskatchewan, South Carolina, South Dakota, Taiwan, Tasmania, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Himalaya, West Siberia, West Virginia, Wisconsin, Wyoming, Yukon

    Poa compressa L. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Great Britain K000641211
    Ball, J. [s.n.], Great Britain K000641210
    [illegible] [s.n.], France K000641218
    Lang [s.n.], Germany K000641216
    [Lang] [s.n.], Germany K000641217
    s.coll. [s.n.], Great Britain K000641212
    s.coll. [125], Great Britain K000641213
    s.coll. [127], Great Britain K000641214
    s.coll. [129], Great Britain K000641215

    First published in Sp. Pl.: 69 (1753)

    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.
    • Dobignard, A. & Chatelain, C. (2013). Index synonymique de la flore d'Afrique du nord 5: 1-451. Éditions des conservatoire et jardin botaniques, Genève.
    • Kuo, M.L. (ed.) (2012). Flora of Taiwan, ed. 2, Suppl.: 1-414. Editorial Committee of the Flora of Taiwan, Second Edition, National Taiwan University.
    • Soreng, R.J. & Peterson, P.M. (2012). Revision of Poa L. (Poaceae, Pooideae, Poeae, Poinae) in Mexico: new records, re-evaluation of P. ruprechtii, and two new species, P. palmeri and P. wendtii PhytoKeys 15: 1-104.
    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • Meyer, F.K. (2011). Beiträge zur Flora von Albanien Haussknechtia, Beih. 15: 1-220.
    • Sheremetova, S.A., Ebel, A.L. & Buko, T.E. (2011). Supplement to the flora of Kemerovo region since 2001 till 2010 Turczaninowia 14(1): 65-74.
    • Edgar, E & Connor, H.E. (2010). Flora of New Zealand, ed. 2, 5: 1-650. R.E.Owen, Government Printer, Wellington.
    • Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.
    • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
    • Wilson, A. (ed.) (2009). Flora of Australia 44A: 1-410. Australian Government Publishing Service, Canberra.
    • 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.
    • 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.
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
    • Takhtajan, A.L. (ed.) (2006). Conspectus Florae Caucasi 2: 1-466. Editio Universitatis Petropolitanae.
    • 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.
    • Davis, P.H. (ed.) (1985). Flora of Turkey and the East Aegean Islands 9: 1-724. Edinburgh University Press, Edinburgh.
    • 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.
    • Meikle, R.D. (1985). Flora of Cyprus 2: 833-1970. The Bentham-Moxon Trust Royal Botanic Gardens, Kew.
    • 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.
    • Dobignard, A. & Chatelain, C. (2013). Index synonymique de la flore d'Afrique du nord 5: 1-451. Éditions des conservatoire et jardin botaniques, Genève.
    • Kuo, M.L. (ed.) (2012). Flora of Taiwan, ed. 2, Suppl.: 1-414. Editorial Committee of the Flora of Taiwan, Second Edition, National Taiwan University.
    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • Sheremetova, S.A., Ebel, A.L. & Buko, T.E. (2011). Supplement to the flora of Kemerovo region since 2001 till 2010 Turczaninowia 14(1): 65-74.
    • Edgar, E & Connor, H.E. (2010). Flora of New Zealand, ed. 2, 5: 1-650. R.E.Owen, Government Printer, Wellington.
    • Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.
    • Wilson, A. (ed.) (2009). Flora of Australia 44A: 1-410. Australian Government Publishing Service, Canberra.
    • 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.
    • 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.
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
    • Takhtajan, A.L. (ed.) (2006). Conspectus Florae Caucasi 2: 1-466. Editio Universitatis Petropolitanae.
    • 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.
    • Davis, P.H. (ed.) (1985). Flora of Turkey and the East Aegean Islands 9: 1-724. Edinburgh University Press, Edinburgh.
    • 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.
    • Meikle, R.D. (1985). Flora of Cyprus 2: 833-1970. The Bentham-Moxon Trust Royal Botanic Gardens, Kew.
    • Tutin, T.G. & al. (eds.) (1980). Flora Europaea 5: 1-452. Cambridge University Press.
    • Mouterde, P. (1966). Nouvelle Flore du Liban et de la Syrie 1(Texte): 1-563. Éditions de l'imprimerie Catholique, Beyrouth.

    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