1. Family: Poaceae Barnhart
    1. Genus: Isachne R.Br.
      1. Isachne polygonoides (Lam.) Döll

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

    [GB]
    Habit
    Perennial. Culms decumbent; 50-60 cm long; rooting from lower nodes. Culm-internodes distally glabrous. Culm-nodes glabrous, or pubescent. Lateral branches ample. Leaf-sheaths glabrous on surface, or hispid; with tubercle-based hairs. Ligule a fringe of hairs; 1-2.5 mm long. Leaf-blade base cordate. Leaf-blades lanceolate; 2-4 cm long; 7-13 mm wide. Leaf-blade surface scabrous; rough adaxially; puberulous; hairy abaxially. Leaf-blade margins scabrous.
    Inflorescences
    Inflorescence a panicle; embraced at base by subtending leaf. Panicle open; pyramidal; 2-6 cm long. Primary panicle branches spreading; 1 -nate. Panicle branches glandular. Spikelets spreading; solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic, or orbicular; dorsally compressed; 1.3-2 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes elongated between glumes.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic, or orbicular; dorsally compressed; 1.3-2 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes elongated between glumes.
    Glume
    Glumes deciduous; similar; reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 1.2-1.8 mm long; 0.9 length of spikelet; membranous; without keels; 5 -veined. Lower glume surface glabrous, or pubescent; hairy at apex. Lower glume apex acute. Upper glume ovate; 1.3-1.9 mm long; 1 length of spikelet; membranous; without keels; 7 -veined. Upper glume surface glabrous, or pubescent; hairy at apex. Upper glume apex acute.
    Florets
    Basal sterile florets male; with palea; attached to and deciduous with the fertile. Lemma of lower sterile floret ovate; 1.5-1.7 mm long; chartaceous; 5 -veined; glabrous; obtuse. Fertile florets female. Fertile lemma ovate; 1.2-1.5 mm long; coriaceous; without keel. Lemma surface puberulous. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.
    Flowers
    Anthers 3; 0.4-0.5 mm long.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    Asia-tropical: Indo-China. North America: Mexico. South America: Mesoamericana, Caribbean, northern South America, western South America, and Brazil.
    Reference
    Isachneae. Fl Costa Rica 1994.
    [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. 0 - 2000 m.; Amazonia, Andes, Guayana y Serranía de La Macarena, Orinoquia.
    Habit
    Hierba
    Conservation
    No Evaluada

    Images

    Distribution

    Native to:

    Belize, Bolivia, Brazil North, Brazil Northeast, Brazil Southeast, Brazil West-Central, Cayman Is., Colombia, Costa Rica, Cuba, Dominican Republic, French Guiana, Guatemala, Guyana, Haiti, Honduras, Mexico Southeast, Mexico Southwest, Nicaragua, Panamá, Peru, Puerto Rico, Suriname, Trinidad-Tobago, Venezuela

    Isachne polygonoides (Lam.) Döll appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 2014 Riedel [35], Brazil K001055167
    Jan 1, 2014 s.coll. [1295], Brazil K001055177
    Jan 1, 1984 Mori, S. [15736], Brazil K001055174
    Jan 1, 1973 Irwin, H.S. [21552], Brazil K001055173
    Jan 1, 1973 Prance, G.T. [8598], Brazil K001055171
    Kerr, A.F.G. [6675], Thailand K000621273
    Kerr, A.F.G. [8298], Thailand K000621274
    Kerr, A.F.G. [9392], Thailand K000621275
    Kerr, A.F.G. [9392], Thailand K000621276
    Kerr, A.F.G. [11695], Thailand K000621277
    Kerr, A.F.G. [11695], Thailand K000621278
    Kerr, A.F.G. [18287], Thailand K000621279
    Smitinand, T. [3684], Thailand K000688395
    Swallen, J.R. [4941], Brazil K001055168
    Black, G.A. [52-14302], Brazil K001055169
    Black, G.A. [52-14244], Brazil K001055170
    Traill, J.W.H. [1254], Brazil K001055176
    Janssen, A. [722], Brazil K001055172
    Janssen, A. [200], Brazil K001055175

    First published in C.F.P.von Martius & auct. suc. (eds.), Fl. Bras. 2(2): 273 (1877)

    Accepted by

    • Longhi-Wagner, H.M. & Welker, C.A.D. (2014). A new species of Isachne (Poaceae, Micrairoideae) from Brazil and a synopsis of the Brazilian species of the genus Systematic Botany 39: 845-849.
    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • 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/.
    • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
    • 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/