1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum petropolitanum Zuloaga & Morrone

        This species is accepted, and its native range is Brazil (Rio de Janeiro).

    [GB]
    Habit
    Perennial. Stolons present. Culms geniculately ascending; 10-25 cm long; rooting from lower nodes. Culm-internodes terete, or elliptical in section; 1-4 cm long; distally glabrous. Culm-nodes constricted; brown; glabrous, or pubescent, or bearded. Lateral branches ample. Leaf-sheaths 1.5-5.5 cm long; longer than adjacent culm internode; glabrous on surface; outer margin hairy. Ligule a ciliate membrane; 0.2 mm long. Collar glabrous. Leaf-blades linear, or lanceolate; 2-5 cm long; 1-3 mm wide. Leaf-blade margins scaberulous. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence a panicle. Peduncle 8-16 cm long. Panicle open; ovate; effuse; 2-4 cm long; 1-3.5 cm wide. Primary panicle branches not whorled. Panicle axis glabrous. Panicle branches glabrous; glabrous in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1-7 mm long; scaberulous.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2.4-2.6 mm long; 0.9 mm wide; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 2.4-2.6 mm long; 0.9 mm wide; falling entire.
    Glume
    Glumes similar; reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate; not clasping; 1.8-2 mm long; 0.75 length of spikelet; membranous; without keels; 1(-3) -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent, or obscure. Lower glume apex acute. Upper glume elliptic; 1 length of spikelet; membranous; without keels; (7-)9 -veined. Upper glume apex acute.
    Florets
    Basal sterile florets barren; with palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 9 -veined; acute. Palea of lower sterile floret 1.5 mm long. Fertile lemma elliptic; dorsally compressed; 2.3 mm long; 0.7 mm wide; indurate; shiny; without keel. Lemma margins involute. Lemma apex apiculate. Palea involute; indurate.
    Flowers
    Anthers 3; 1 mm long.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid; 1.2 mm long. Embryo 0.33 length of caryopsis. Hilum punctiform.
    Distribution
    South America: Brazil.
    Reference
    Paniceae. Zuloaga 1994.

    Distribution

    Native to:

    Brazil Southeast

    Panicum petropolitanum Zuloaga & Morrone appears in other Kew resources:

    First published in Ann. Missouri Bot. Gard. 78: 161 (1991)

    Accepted by

    • 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
    • Forzza, R.C. & al. (2013). Lista de Espécies da Flora do Brasil http://floradobrasil.jbrj.gov.br/2010/.

    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