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

        This species is accepted, and its native range is Central Brazil.

    [GB]
    Habit
    Annual. Culms geniculately ascending; slender; 9-12 cm long. Culm-internodes distally glabrous. Lateral branches ample. Leaf-sheaths mostly shorter than adjacent culm internode; pilose. Ligule an eciliate membrane; 1 mm long. Leaf-blades 0.5-1.6 cm long; 1-4 mm wide. Leaf-blade surface glabrous. Leaf-blade apex acute.
    Inflorescences
    Inflorescence a panicle. Panicle open; ovate; 1.2-2.5 cm long; bearing few spikelets. Primary panicle branches reflexed; bearing 1-3 fertile spikelets on each lower branch. Panicle branches capillary. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.5 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.5 mm long; falling entire.
    Glume
    Glumes reaching apex of florets; thinner than fertile lemma. Lower glume linear; 0.7 mm long; 0.5 length of spikelet; hyaline; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 1 length of spikelet; membranous; without keels; 5 -veined. Upper glume surface pilose; with tubercle-based hairs. Upper glume apex acute.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 5 -veined; pilose; with tubercle-based hairs; acute. Fertile lemma elliptic; dorsally compressed; 1.5 mm long; indurate; pallid; shiny; without keel. Lemma surface smooth. Lemma margins involute. Lemma apex acute. Palea involute; indurate.
    Distribution
    South America: Brazil.
    Reference
    Paniceae. Swallen 2002.

    Distribution

    Native to:

    Brazil Southeast, Brazil West-Central

    Panicum machrisianum Swallen appears in other Kew resources:

    First published in Los Angeles County Mus. Contr. Sci. 22: 10 (1958)

    Accepted by

    • Soreng, R.J., Davidse, G., Peterson, P.M., Zuloaga, F.O., Judziewicz, E.J., Filgueiras, T.S. & Morrone, O. (eds.) (2005). Catalogue of New World Grasses project. TROPICOS,the Missouri Botanical Garden's on-line taxonomic database http://mobot.mobot.org/W3T/Search/nwgc.html.

    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