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

        This species is accepted, and its native range is SW. & S. Central U.S.A. to Honduras, Venezuela, Galápagos.

    [GB]
    Habit
    Annual; caespitose. Culms erect, or geniculately ascending; 13-95 cm long. Culm-internodes terete; 1.5-10 cm long; distally glabrous, or hispid. Culm-nodes glabrous, or pubescent. Lateral branches ample; arising from lower culm. Leaf-sheaths 2-7 cm long; glabrous on surface, or hirsute; outer margin hairy. Ligule a ciliolate membrane; 0.7-1.8 mm long. Collar glabrous. Leaf-blades erect, or ascending; linear, or lanceolate; 2-18 cm long; 3-17 mm wide. Leaf-blade surface glabrous, or pilose; sparsely hairy; hairy abaxially. Leaf-blade margins scaberulous. Leaf-blade apex acute.
    Inflorescences
    Inflorescence a panicle. Peduncle 15-30 cm long. Panicle open; pyramidal; effuse; 3.5-23 cm long; 1.5-11 cm wide. Panicle axis scaberulous; glabrous. Panicle branches scaberulous; glabrous. Spikelets appressed; solitary. Fertile spikelets pedicelled. Pedicels clavate; 1-4 mm long; scaberulous; glabrous, or ciliate; hairy at tip.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; acuminate; 2.4-3 mm long; 0.7-0.9 mm wide; falling entire. Rhachilla internodes elongated between glumes. Rhachilla elongation 0.5 mm long.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; acuminate; 2.4-3 mm long; 0.7-0.9 mm wide; falling entire. Rhachilla internodes elongated between glumes. Rhachilla elongation 0.5 mm long.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; not clasping; 1.2-1.8 mm long; 0.5-0.75 length of spikelet; membranous; without keels; 5-7 -veined. Lower glume primary vein scaberulous. Lower glume apex acuminate. Upper glume elliptic; 2.2-2.7 mm long; 1 length of spikelet; membranous; without keels; 7-9(-11) -veined. Upper glume apex acute.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; elliptic; 2.1-2.8 mm long; 1 length of spikelet; membranous; 7-9(-11) -veined; acute. Fertile lemma obovate; thickened on margins at base; dorsally compressed; 1.5-1.8 mm long; 0.6-0.9 mm wide; indurate; grey; without keel. Lemma surface papillose. Lemma margins involute. Palea involute; indurate.
    Flowers
    Anthers 3; 1.3 mm long.
    Fruits
    Caryopsis with adherent pericarp; ovoid; 1-1.2 mm long; pallid. Embryo 0.5 length of caryopsis. Hilum punctiform.
    Distribution
    North America: Mexico. South America: western South America.
    Reference
    Paniceae. Zuloaga 2001.

    Distribution

    Native to:

    Arizona, California, Galápagos, Honduras, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, New Mexico, Texas, Venezuela

    Panicum alatum Zuloaga & Morrone appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Hinton, G.B. [6423], Guerrero K000476084

    First published in Ann. Missouri Bot. Gard. 83: 224 (1996)

    Accepted by

    • Nelson Sutherland, C.H. (2008). Catálogo de las plantes vasculares de Honduras. Espermatofitas: 1-1576. SERNA/Guaymuras, Tegucigalpa, Honduras.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
    • Jørgensen, P.M. & León-Yánez, S. (eds.) (1999). Catalogue of the Vascular Plants of Ecuador Monographs in Systematic Botany from the Missouri Botanical Garden 75: i-viii, 1-1181.

    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.
    • Nelson Sutherland, C.H. (2008). Catálogo de las plantes vasculares de Honduras. Espermatofitas: 1-1576. SERNA/Guaymuras, Tegucigalpa, Honduras.
    • Dávila, P., Mejia-Saulés, M.T., Gómez-Sánchez, N., Valdés-Reyna, J., Ortíz, J.J., Morín, C., Castrejón, J. & Ocampo, A. (2006). Catálogo de las Gramíneas de México: 1-671. CONABIO, México city.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
    • Jørgensen, P.M. & León-Yánez, S. (eds.) (1999). Catalogue of the Vascular Plants of Ecuador Monographs in Systematic Botany from the Missouri Botanical Garden 75: i-viii, 1-1181.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Herbarium Catalogue Specimens
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.

    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