1. Family: Poaceae Barnhart
    1. Peyritschia E.Fourn.

      1. This genus is accepted, and its native range is Mexico to Venezuela and Ecuador, Galápagos.

    [GB]

    nonem

    Habit
    Perennial. Culms erect (1/2), or decumbent (1/2); slender (2/3), or weak (1/3); 5-56.15-100 cm long. Lateral branches lacking (2/2). Ligule an eciliate membrane.
    Inflorescences
    Inflorescence a panicle. Panicle open (3), or contracted (2), or spiciform (2). Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension (1), or with a barren rhachilla extension (5), or with diminished florets at the apex (1). Spikelets oblong (4), or cuneate (3); laterally compressed; 3-4.662-6.1 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes glabrous (2), or pilose (4), or villous (1). Floret callus pubescent (6), or pilose (1).
    Fertile
    Spikelets comprising 2 fertile florets; without rhachilla extension (1), or with a barren rhachilla extension (5), or with diminished florets at the apex (1). Spikelets oblong (4), or cuneate (3); laterally compressed; 3-4.662-6.1 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes glabrous (2), or pilose (4), or villous (1). Floret callus pubescent (6), or pilose (1).
    Glume
    Glumes persistent; shorter than spikelet (1), or reaching apex of florets (3), or exceeding apex of florets (4); thinner than fertile lemma; parallel to lemmas (4), or gaping (3). Lower glume linear (1), or lanceolate (4), or elliptic (2); 0.9-0.9929-1 length of upper glume; hyaline (1), or membranous (6); 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute (5), or acuminate (1), or setaceously attenuate (1). Upper glume linear (1), or lanceolate (4), or elliptic (2); 0.75-1.214-1.7 length of adjacent fertile lemma; hyaline (1), or membranous (6); 1-keeled; 1 -veined (4), or 3 -veined (3). Upper glume apex acute (5), or acuminate (2).
    Florets
    Fertile lemma lanceolate (3), or elliptic (1), or oblong (3); subterete (1/1); membranous (4), or cartilaginous (3); without keel (1/6), or keeled (5/6); 5 -veined. Lemma surface smooth (6), or scaberulous (1). Lemma margins flat (6), or involute (1). Lemma apex entire (1), or dentate (3), or lobed (3); 2 -fid (5/6), or 4 -fid (1/6); incised 0.2 of lemma length; obtuse (4/4); awned; 1 -awned. Principal lemma awn dorsal; straight (1), or geniculate (6). Palea embraced by lemma (4), or gaping (3); 0.7-0.875-1 length of lemma; hyaline (3), or membranous (4). Apical sterile florets resembling fertile though underdeveloped (1/1).
    Flowers
    Lodicules 2 (1/1). Anthers 2 (4/6), or 3 (2/6). Ovary glabrous (2/2).
    Fruits
    Caryopsis with adherent pericarp (6/6); fusiform (2/2). Embryo 0.3 length of caryopsis. Hilum punctiform (3/3).
    Distribution
    North America (5), or South America (6).

    Images

    Distribution

    Native to:

    Colombia, Costa Rica, Ecuador, El Salvador, Galápagos, Guatemala, Honduras, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Nicaragua, Panamá, Peru, Venezuela

    Peyritschia E.Fourn. appears in other Kew resources:

    First published in Mexic. Pl. 2: 109 (1886)

    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