1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum petrense Swallen

        This species is accepted, and its native range is Venezuela.

    [GB]
    Habit
    Annual; caespitose; clumped densely. Culms erect; slender; 25-30 cm long. Lateral branches ample; erect. Leaf-sheaths mostly shorter than adjacent culm internode, or subequal to internodes. Ligule an eciliate membrane; 0.3 mm long. Leaf-blades erect, or ascending; 1.5-3 cm long; 1.5-3 mm wide; glaucous. Leaf-blade surface glabrous; hairless throughout, or except near base.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; 1.5-3 cm long. Primary panicle branches ascending, or spreading; 1 -nate. Panicle branches scaberulous. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.2-1.3 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.2-1.3 mm long; falling entire.
    Glume
    Glumes shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 0.6-0.7 mm long; 0.5 length of spikelet; membranous. Lower glume lateral veins absent. Lower glume apex obtuse, or acute. Upper glume ovate; 0.66-0.75 length of spikelet; membranous; without keels. Upper glume surface pubescent.
    Florets
    Basal sterile florets male; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; pubescent. Fertile lemma ovate; dorsally compressed; 0.8 mm long; indurate; pallid; without keel. Lemma surface striate. Lemma margins involute. Palea involute; indurate.
    Distribution
    South America: northern South America.
    Reference
    Paniceae. Swallen 2002.

    Distribution

    Native to:

    Venezuela

    Panicum petrense Swallen appears in other Kew resources:

    First published in Mem. New York Bot. Gard. 9: 259 (1957)

    Accepted by

    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
    • 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
    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.

    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 2019. 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 2019. 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