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

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

    [GB]
    Habit
    Perennial. Culms decumbent; 90-120 cm long; rooting from lower nodes. Culm-internodes 3-14 cm long; distally glabrous. Culm-nodes purple; glabrous. Lateral branches ample; arising from upper culm. Leaf-sheaths 3-8 cm long; glabrous on surface; outer margin hairy. Ligule a ciliate membrane; 0.3-0.4 mm long. Collar pubescent. Leaf-blade base broadly rounded. Leaf-blades lanceolate, or oblong; 10-12 cm long; 10-14 mm wide. Leaf-blade midrib conspicuous. Leaf-blade surface glabrous; hairless except near base. Leaf-blade margins scabrous; ciliate.
    Inflorescences
    Inflorescence a panicle. Peduncle 20-40 cm long; scaberulous above. Panicle open; ovate; effuse; 13-18 cm long; 10-20 cm wide. Panicle axis glabrous. Panicle branches scabrous; glabrous in axils. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 3-8 mm long; smooth.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 4.6-5 mm long; 1.6-1.7 mm wide; falling entire. Rhachilla internodes elongated between glumes.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 4.6-5 mm long; 1.6-1.7 mm wide; falling entire. Rhachilla internodes elongated between glumes.
    Glume
    Glumes dissimilar; shorter than spikelet; thinner than fertile lemma. Lower glume ovate; 2.6-3.2 mm long; 0.5-0.6 length of spikelet; membranous; without keels; 5 -veined. Lower glume apex acuminate. Upper glume elliptic; 4-4.3 mm long; 0.9 length of spikelet; membranous; without keels; (11-)13 -veined. Upper glume surface asperulous. Upper glume apex obtuse.
    Florets
    Basal sterile florets male; with palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 13 -veined; scaberulous; acute. Palea of lower sterile floret 1 length of lemma; pilose; adorned on flanks. Fertile lemma lanceolate; dorsally compressed; 4-4.2 mm long; 1.3-1.6 mm wide; indurate; without keel; 7 -veined. Lemma surface scaberulous; rough above. Lemma margins involute. Lemma apex apiculate; pubescent. Palea involute; indurate. Palea surface scaberulous (above).
    Flowers
    Anthers 3; 2.2 mm long.
    Fruits
    Caryopsis with adherent pericarp; obovoid; 2.5 mm long. Embryo 0.2 length of caryopsis. Hilum punctiform.
    Distribution
    South America: Brazil.
    Reference
    Paniceae. Zuloaga 1994.

    Distribution

    Native to:

    Brazil Southeast

    Panicum itatiaiae Swallen appears in other Kew resources:

    First published in Phytologia 14: 81 (1966)

    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