Skip to main content
  1. Family: Poaceae Barnhart
    1. Sphenopholis Scribn.

      1. This genus is accepted, and its native range is Hawaiian Islands, N. America, Hispaniola.

    [GB]

    nonem

    Habit
    Annual (2), or perennial (6). Culms erect (3/3), or geniculately ascending (1/3); 10-58.92-120 cm long. Ligule an eciliate membrane (6), or a ciliolate membrane (1).
    Inflorescences
    Inflorescence a panicle. Panicle open (5), or contracted (3). Primary panicle branches not whorled (6), or whorled at most nodes (1). Spikelets solitary. Fertile spikelets pedicelled. Pedicels linear (4/4).
    Spikelets
    Spikelets comprising 1 fertile florets (1), or 2 fertile florets, or 3 fertile florets (6); with a barren rhachilla extension (6), or with diminished florets at the apex (1). Spikelets oblong (1), or obovate (6); laterally compressed; 1.5-4.407-9.5 mm long; falling entire. Rhachilla internodes glabrous (3), or pubescent (4). Floret callus brief (6), or evident (1).
    Fertile
    Spikelets comprising 1 fertile florets (1), or 2 fertile florets, or 3 fertile florets (6); with a barren rhachilla extension (6), or with diminished florets at the apex (1). Spikelets oblong (1), or obovate (6); laterally compressed; 1.5-4.407-9.5 mm long; falling entire. Rhachilla internodes glabrous (3), or pubescent (4). Floret callus brief (6), or evident (1).
    Glume
    Glumes shorter than spikelet, or reaching apex of florets (1); thinner than fertile lemma (1), or similar to fertile lemma in texture (6); parallel to lemmas (1), or gaping (6). Lower glume linear (2), or lanceolate (3), or oblong (1), or obovate (1); 0.7-0.9357-1 length of upper glume; membranous; 1-keeled; 1 -veined (6), or 2 -veined (1), or 3 -veined (2). Lower glume lateral veins absent (5), or distinct (2). Lower glume apex obtuse (1/5), or acute (4/5); muticous, or mucronate (1). Upper glume elliptic (1), or obovate; 0.7-0.88-1.1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined (6), or 4 -veined (1), or 5 -veined (2). Upper glume surface smooth, or asperulous (1). Upper glume apex truncate (2), or obtuse (1), or acute (5); muticous, or mucronate (1).
    Florets
    Fertile lemma lanceolate (1), or elliptic (4), or ovate (2); membranous; without keel (6), or keeled (1); 5 -veined. Lemma lateral veins obscure (1/1). Lemma surface smooth (4), or scaberulous (3), or scabrous (1). Lemma apex entire (6), or lobed (1); 2 -fid (1/1); obtuse (2), or acute (6), or setaceously attenuate (1); muticous (5), or mucronate (3), or awned (4); 1 -awned (4/4). Principal lemma awn apical (1/5), or subapical (3/5), or dorsal (1/5); straight (1/5), or curved (3/5), or bigeniculate (1/5). Palea embraced by lemma (1), or gaping (6); 0.66-0.772-0.8 length of lemma; hyaline (1), or membranous (6). Palea keels smooth (3), or scaberulous (4). Apical sterile florets resembling fertile though underdeveloped (1/1).
    Flowers
    Anthers 3 (2/2). Ovary glabrous (5/5).
    Fruits
    Caryopsis with adherent pericarp (6/6); oblong (4/4). Hilum punctiform (1/1).
    Distribution
    Pacific (1), or North America, or South America (1).

    Images

    Distribution

    Native to:

    Alabama, Alaska, Alberta, Arizona, Arkansas, British Columbia, California, Colorado, Connecticut, Delaware, District of Columbia, Dominican Republic, Florida, Georgia, Haiti, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Manitoba, Maryland, Masachusettes, Mexico Central, Mexico Northeast, Mexico Northwest, Mexico Southwest, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, Newfoundland, North Carolina, North Dakota, Northwest Territorie, Nova Scotia, Ohio, Oklahoma, Ontario, Oregon, Pennsylvania, Prince Edward I., Québec, Rhode I., Saskatchewan, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, Yukon

    Accepted Species

    Synonyms

    Other Data

    Sphenopholis Scribn. appears in other Kew resources:

    Bibliography

    First published in Rhodora 8: 142 (1906)

    Accepted by

    • Govaerts, R. (2019). World Checklist of Vascular Plants (WCVP Database) The Board of 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 2020. 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 2020. 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