1. Family: Poaceae Barnhart
    1. Genus: Streptogyna P.Beauv.
      1. Streptogyna americana C.E.Hubb.

        This species is accepted, and its native range is S. Mexico to S. Tropical America and Trinidad.

    [CPLC]

    Bernal, R., Gradstein, S.R. & Celis, M. (eds.). 2015. Catálogo de plantas y líquenes de Colombia. Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Bogotá. http://catalogoplantasdecolombia.unal.edu.co

    Distribution
    Nativa en Colombia; Alt. 170 - 650 m.; Amazonia, Guayana y Serranía de La Macarena, Orinoquia, Pacífico.
    Habit
    Hierba
    Conservation
    No Evaluada
    [GB]
    Habit
    Perennial; caespitose. Rhizomes absent. Culms erect; 60-150 cm long. Ligule an eciliate membrane; 1-2 mm long; pubescent on abaxial surface; erose. Leaf-blade base with a false petiole. Leaf-blades lanceolate; 30-60 cm long; 8-16(-24) mm wide. Leaf-blade venation with distinct cross veins. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; unilateral; 15-50 cm long. Rhachis semiterete; pubescent on surface. Spikelet packing broadside to rhachis; regular; 1 -rowed. Spikelets appressed; solitary. Fertile spikelets pedicelled. Pedicels 1-2 mm long.
    Spikelets
    Spikelets comprising 2-4 fertile florets; with diminished florets at the apex. Spikelets linear, or oblong; laterally compressed; 20-30 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes terete; springy and forming a hair trap; 3-5 mm long; eventually visible between lemmas. Floret callus elongated; glabrous; obtuse.
    Fertile
    Spikelets comprising 2-4 fertile florets; with diminished florets at the apex. Spikelets linear, or oblong; laterally compressed; 20-30 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes terete; springy and forming a hair trap; 3-5 mm long; eventually visible between lemmas. Floret callus elongated; glabrous; obtuse.
    Glume
    Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma. Lower glume lanceolate; 3-10 mm long; 0.2-0.5 length of upper glume; scarious; dark brown; 1-keeled; 3 -veined. Lower glume apex acute. Upper glume lanceolate; 17-23 mm long; 1 length of adjacent fertile lemma; scarious; dark brown; 1-keeled; 9 -veined. Upper glume lateral veins with cross-veins. Upper glume apex acute; mucronate.
    Florets
    Fertile lemma oblong; subterete; 18-22 mm long; coriaceous; dark brown; without keel; 9 -veined. Lemma surface glabrous. Lemma margins convolute; covering most of palea. Lemma apex dentate; truncate; awned; 1 -awned. Principal lemma awn from a sinus; 15-25 mm long overall; limb scaberulous. Palea keels contiguous above a sulcus. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 3; oblanceolate; 1.5-2.5 mm long; membranous; veined; ciliate; obtuse. Anthers 2. Stigmas 3; terminally exserted and tangled; papillose. Ovary glabrous.
    Fruits
    Caryopsis with adherent pericarp; linear; isodiametric; biconvex; 15 mm long; glabrous; apex rostrate. Embryo 0.1 length of caryopsis. Hilum linear; 1 length of caryopsis.
    Distribution
    North America: Mexico. South America: Mesoamericana, Caribbean, northern South America, western South America, and Brazil.
    Reference
    Streptogyneae. WDC.

    Images

    Distribution

    Native to:

    Belize, Bolivia, Brazil North, Brazil Northeast, Brazil Southeast, Brazil West-Central, Colombia, Costa Rica, French Guiana, Guatemala, Guyana, Honduras, Mexico Gulf, Mexico Southeast, Nicaragua, Panamá, Peru, Suriname, Trinidad-Tobago, Venezuela

    Streptogyna americana C.E.Hubb. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 2014 Ratter, J.A. [5787], Brazil K001055108
    Jan 1, 2014 Ule, E. [8053], Brazil K001055090
    Jan 1, 2014 Ule, E. [7699], Brazil K001055091
    Jan 1, 2014 Calderon, C.E. [2809], Brazil K001055104
    Jan 1, 2014 Riedel [1248], Brazil K001055110
    Jan 1, 2014 Burchell [9201], Brazil K001055109
    Jan 1, 2014 Burchell [9194-2], Brazil K001055111
    Nov 1, 2013 Ratter, J.A. [974], Brazil K001055097
    Nov 1, 2013 Ratter, J.A. [974], Brazil K001055099
    Nov 1, 2013 Maas, P.J.M. [6697], Brazil K001055092
    Nov 1, 2013 Folli, D.A. [2647], Brazil K001055094
    Nov 1, 2013 Amaral, I.L. [1100], Brazil K001055102
    Nov 1, 2013 Prance, G.T. [6527], Brazil K001055106
    Jan 1, 2009 Zappi, D.C. [1442], Mato Grosso K000579241
    Jan 1, 1988 Nee, M. [34790], Brazil K001055103
    Jan 1, 1985 Teixeira, L.O.A. [625], Brazil K001055105
    Jan 1, 1984 Strudwick, J.J. [3109], Brazil K001055101
    Jan 1, 1962 Egler, W.A. [46417], Brazil K001055089
    Harley, R.M. [10271], Brazil K001055096
    Maguire, B. [23975], Surinam K000433411 Unknown type material
    Ratter, J.A. [1820], Brazil K001055098
    Ratter, J.A. [R 1820], Brazil K001055100
    Ratter, J.A. [R 5469], Brazil K001055107
    Soderstrom, T.R. [1883], Brazil K001055095
    Folli, D.A. [2347], Brazil K001055093

    First published in Hooker's Icon. Pl. 36: t. 3572, p. 5 (1956)

    Accepted by

    • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
    • 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.
    • 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.
    • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.
    • Boggan, J. Funck, V. & Kelloff, C. (1997). Checklist of the Plants of the Guianas (Guyana, Surinam, Franch Guiana) ed. 2: 1-238. University of Guyana, Georgetown.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.
    • Brako, L. & Zarucchi, J.L. (1993). Catalogue of the Flowering Plants and Gymnosperms of Peru Monographs in Systematic Botany from the Missouri Botanical Garden 45: i-xl, 1-1286.

    Literature

    Kew Backbone Distributions
    • Forzza, R.C. & al. (2013). Lista de Espécies da Flora do Brasil http://floradobrasil.jbrj.gov.br/2010/.
    • Giraldo-Cañas, D. (2011). Catálogo de la familia Poaceae en Colombia Darwiniana 49: 139-247.
    • 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.
    • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.
    • Boggan, J. Funck, V. & Kelloff, C. (1997). Checklist of the Plants of the Guianas (Guyana, Surinam, Franch Guiana) ed. 2: 1-238. University of Guyana, Georgetown.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.
    • Brako, L. & Zarucchi, J.L. (1993). Catalogue of the Flowering Plants and Gymnosperms of Peru Monographs in Systematic Botany from the Missouri Botanical Garden 45: i-xl, 1-1286.

    Sources

    Catálogo de Plantas y Líquenes de Colombia
    http://creativecommons.org/licenses/by-nc-sa/3.0

    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 2020. 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 2020. 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

    Kew Science Photographs
    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/