1. Family: Poaceae Barnhart
    1. Genus: Panicum L.
      1. Panicum portoricense Desv.

        This species is accepted, and its native range is Central & E. U.S.A. to Honduras, Caribbean.

    [GB]
    Habit
    Perennial. Culms erect; 15-30 cm long. Lateral branches ample. Leaves heterophyllous with a basal winter rosette. Leaf-sheaths glabrous on surface, or puberulous. Ligule absent. Leaf-blades lanceolate; 2-5 cm long; 3-6 mm wide. Leaf-blade surface glabrous, or puberulous.
    Inflorescences
    Inflorescence a panicle. Panicle open; oblong; 2-4 cm long. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; obtuse; 1.5-1.6 mm long; falling entire.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; obtuse; 1.5-1.6 mm long; falling entire.
    Glume
    Glumes dissimilar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; clasping; 0.33 length of spikelet; membranous; without keels. Lower glume apex truncate, or obtuse. Upper glume obovate; 1 length of spikelet; membranous; without keels; 7 -veined. Upper glume surface puberulous. Upper glume apex obtuse.
    Florets
    Basal sterile florets barren. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 7 -veined; puberulous; obtuse. Fertile lemma elliptic; dorsally compressed; 1.5-1.6 mm long; indurate; without keel. Lemma margins involute. Palea involute; indurate.
    Distribution
    North America: eastern Canada, north-central USA, northeast USA, south-central USA, and southeast USA. South America: Mesoamericana and Caribbean.
    Reference
    Paniceae. Man US Grass 2004.

    Images

    Distribution

    Native to:

    Alabama, Belize, Connecticut, Cuba, Delaware, District of Columbia, Dominican Republic, Florida, Georgia, Haiti, Honduras, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maine, Maryland, Masachusettes, Mexico Gulf, Michigan, Minnesota, Mississippi, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Puerto Rico, Rhode I., South Carolina, Tennessee, Texas, Vermont, Virginia, West Virginia, Wisconsin

    Panicum portoricense Desv. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Nash, G. V. [781], Florida Panicum webberianum K000674498
    Nash, G. V. [466], Florida Panicum lancearium K000674499

    First published in W.Hamilton, Prodr. Pl. Ind. Occid.: 11 (1825)

    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.
    • Jones, R.L. (2005). Plant life of Kentucky. An illustrated guide to the vascular flora: 1-833. The universitry press of Kentucky.

    Literature

    Kew Backbone Distributions
    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • 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.
    • Jones, R.L. (2005). Plant life of Kentucky. An illustrated guide to the vascular flora: 1-833. The universitry press of Kentucky.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.

    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.
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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