1. Family: Poaceae Barnhart
    1. Genus: Puccinellia Parl.
      1. Puccinellia nutkaensis (J.Presl) Fernald & Weath.

        This species is accepted, and its native range is Subarctic America to N. & W. U.S.A.

    [GB]
    Habit
    Perennial; caespitose. Stolons absent, or present. Culms 20-60 cm long. Ligule an eciliate membrane; 1.5-3.5 mm long; obtuse. Leaf-blades flat, or involute; 1-2 mm wide.
    Inflorescences
    Inflorescence a panicle. Panicle open; elliptic; 8-15 cm long. Primary panicle branches ascending, or spreading; 1-3 cm long. Panicle branches smooth, or with occasional prickles. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 5-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 6-10 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1 mm long.
    Fertile
    Spikelets comprising 5-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 6-10 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1 mm long.
    Glume
    Glumes persistent; similar; shorter than spikelet. Lower glume oblong; 1.5 mm long; 0.66 length of upper glume; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex entire, or erose; obtuse. Upper glume oblong; 2.2-2.5 mm long; 0.66 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex entire, or erose; obtuse.
    Florets
    Fertile lemma oblong; 3-3.6 mm long; membranous; much thinner above; without keel; 5 -veined. Lemma lateral veins stopping well short of apex. Lemma surface puberulous; hairy at base. Lemma apex erose; obtuse. Palea 1 length of lemma; 2 -veined. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Anthers 3; 0.7-1.2 mm long. Ovary glabrous.
    Fruits
    Caryopsis with adherent pericarp. Hilum punctiform.
    Distribution
    North America: Subarctic, western Canada, eastern Canada, northwest USA, and southwest USA.
    Reference
    Poeae. Fl Pac NW 1994.

    Distribution

    Native to:

    Alaska, Aleutian Is., British Columbia, California, Greenland, Labrador, Maine, Manitoba, New Brunswick, New Hampshire, Newfoundland, Northwest Territorie, Nova Scotia, Nunavut, Ontario, Oregon, Québec, Washington, Yukon

    Puccinellia nutkaensis (J.Presl) Fernald & Weath. appears in other Kew resources:

    First published in Rhodora 18: 22 (1916)

    Accepted by

    • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Flora of North America Editorial Committee (2007). Flora of North America North of Mexico 24: 1-908. Oxford University Press, New York, Oxford.
    • 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.

    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 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