1. Family: Poaceae Barnhart
    1. Genus: Trichanthecium Zuloaga & Morrone
      1. Trichanthecium nutabundum (Zuloaga & Morrone) Zuloaga & Morrone

        This species is accepted, and its native range is Brazil (Pará).

    [GB]
    Habit
    Annual. Culms decumbent; 10-20 cm long; rooting from lower nodes. Culm-internodes terete; 0.7-2 cm long; yellow, or purple; smooth; distally glabrous. Culm-nodes brown; pubescent. Lateral branches ample; arising from lower culm. Leaf-sheaths mostly shorter than adjacent culm internode; pilose; with tubercle-based hairs; outer margin hairy. Ligule an eciliate membrane; 0.4 mm long; brown. Collar glabrous, or pubescent. Leaf-blades ascending; lanceolate; 1-2.5 cm long; 2-4 mm wide. Leaf-blade surface hirsute. Leaf-blade margins smooth; tuberculate-ciliate; hairy at base. Leaf-blade apex acute.
    Inflorescences
    Inflorescence a panicle. Peduncle 5-10 cm long; glabrous. Panicle open; ovate, or globose; effuse; 1.5-2.5 cm long; 1-2 cm wide. Panicle branches glabrous in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; glabrous.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; tilted on the pedicel; dorsally compressed; obtuse, or subacute; 1.8-2 mm long; 1 mm wide; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; tilted on the pedicel; dorsally compressed; obtuse, or subacute; 1.8-2 mm long; 1 mm wide; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; not clasping; 0.8-1 mm long; 0.5 length of spikelet; membranous; without keels; 1-3 -veined. Lower glume lateral veins absent, or distinct. Lower glume apex acute. Upper glume elliptic; 1 length of spikelet; membranous; without keels; 5 -veined. Upper glume apex acute.
    Florets
    Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 5 -veined; acute. Palea of lower sterile floret 1.2-1.6 mm long. Fertile lemma elliptic; dorsally compressed; 1.5-1.6 mm long; 0.8 mm wide; indurate; without keel. Lemma surface papillose. Lemma margins involute. Palea involute; indurate.
    Flowers
    Lodicules 2; 0.2 mm long; truncate. Anthers 3; 0.8-1.2 mm long.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    South America: Brazil.
    Reference
    Paniceae. Zuloaga 2001.

    Distribution

    Native to:

    Brazil North

    Trichanthecium nutabundum (Zuloaga & Morrone) Zuloaga & Morrone appears in other Kew resources:

    First published in Syst. Bot. Monogr. 94: 53 (2011)

    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