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  1. Family: Poaceae Barnhart
    1. Erioneuron Nash

      1. This genus is accepted, and its native range is W. Central & Central U.S.A. to Mexico, Bolivia to Argentina.

    [GB]

    nonem

    Habit
    Perennial. Stolons absent (3), or present (1). Culms 2-25.87-60 cm long. Ligule a fringe of hairs. Leaf-blades aciculate (1), or linear (3). Leaf-blade margins cartilaginous (3/3).
    Inflorescences
    Inflorescence a panicle; terminal (3), or terminal and axillary (1); subtended by an unspecialized leaf-sheath (3), or an inflated leaf-sheath (1); exserted (3), or embraced at base by subtending leaf (1). Panicle spiciform (1), or capitate (3). Spikelets solitary. Fertile spikelets sessile (1), or pedicelled (3). Pedicels linear (3/3).
    Spikelets
    Spikelets comprising 3 fertile florets (1), or 4-6 fertile florets (2), or 7-8 fertile florets (3), or 9-12 fertile florets (2), or 13-18 fertile florets (1); with diminished florets at the apex. Spikelets oblong; laterally compressed; 5-10.5-16 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose (3/3).
    Fertile
    Spikelets comprising 3 fertile florets (1), or 4-6 fertile florets (2), or 7-8 fertile florets (3), or 9-12 fertile florets (2), or 13-18 fertile florets (1); with diminished florets at the apex. Spikelets oblong; laterally compressed; 5-10.5-16 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose (3/3).
    Glume
    Glumes persistent; shorter than spikelet, or reaching apex of florets (3). Lower glume ovate; 0.9-0.975-1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate; muticous (3), or mucronate (1). Upper glume ovate; 1-1.275-2 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume apex acuminate; muticous (3), or mucronate (1).
    Florets
    Fertile lemma ovate (3), or obovate (1); membranous; without keel; 3 -veined. Lemma lateral veins excurrent (1/1). Lemma surface pilose. Lemma margins ciliate. Lemma apex entire (1), or lobed (3); 2 -fid (3/3); incised 0.4-0.4333-0.5 of lemma length; emarginate (1/2), or truncate (1/2), or obtuse (1/2); awned; 1 -awned. Principal lemma awn from a sinus; straight, or curved (1). Palea 0.5 length of lemma; 2 -veined (3/3). Palea keels eciliate (1), or ciliolate (3). Palea surface glabrous (1), or pilose (3). Apical sterile florets resembling fertile though underdeveloped.
    Fruits
    Caryopsis with adherent pericarp (3/3); ovoid (3/3); laterally compressed (3/3); smooth (3/3). Embryo 0.5 length of caryopsis.
    Cleistogene
    Cleistogenes absent (3), or present (1); in lower sheaths (1/1).
    Distribution
    North America, or South America (2).

    Images

    Distribution

    Native to:

    Argentina Northeast, Argentina Northwest, Argentina South, Arizona, Bolivia, California, Colorado, Kansas, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Southwest, Nevada, New Mexico, Oklahoma, Texas, Utah

    Accepted Species

    Synonyms

    Other Data

    Erioneuron Nash appears in other Kew resources:

    Bibliography

    First published in J.K.Small, Fl. S.E. U.S.: 143 (1903)

    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.

    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