1. Family: Poaceae Barnhart
    1. Genus: Isachne R.Br.
      1. Isachne arundinacea (Sw.) Griseb.

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

    [GB]
    Habit
    Perennial. Rootstock evident. Culms rambling; 100-500 cm long; 4-8 mm diam.; woody; rooting from lower nodes. Culm-internodes thick-walled; distally glabrous. Lateral branches ample. Leaf-sheaths glabrous on surface; outer margin hairy. Ligule a fringe of hairs; 0.5-3.5 mm long. Leaf-blades linear, or lanceolate; 9-20 cm long; 7-22 mm wide. Leaf-blade surface scabrous; glabrous, or hispid; hairy abaxially, or on both sides.
    Inflorescences
    Inflorescence a panicle. Peduncle 4-11 cm long; glabrous. Panicle open; ovate; 8-12 cm long; 8-11 cm wide; with spikelets clustered towards branch tips. Primary panicle branches spreading. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular, or obovate; subterete; 1.4-1.8 mm long; breaking up at maturity; disarticulating above glumes but not between florets.
    Fertile
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets orbicular, or obovate; subterete; 1.4-1.8 mm long; breaking up at maturity; disarticulating above glumes but not between florets.
    Glume
    Glumes deciduous; similar; with lower narrower than upper; shorter than spikelet, or reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 1-1.4 mm long; 0.75 length of spikelet; membranous; without keels; 5 -veined. Lower glume surface glabrous, or pubescent; hairy at apex. Lower glume apex obtuse. Upper glume ovate; 1-1.7 mm long; 0.9-1 length of spikelet; membranous; without keels; 7 -veined. Upper glume surface glabrous, or pubescent; hairy at apex. Upper glume apex obtuse.
    Florets
    Fertile florets with the lowest dissimilar. Lowest fertile lemma 1.4-1.7 mm long; of similar consistency to adjacent lemma. Fertile lemma elliptic, or obovate; 1-1.3 mm long; coriaceous; without keel. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.
    Flowers
    Anthers 2-3; 1 mm long; yellow, or purple.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    North America: Mexico. South America: Mesoamericana, Caribbean, northern South America, and western South America.
    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 - 2500 m.; Amazonia, Andes, Llanura del Caribe, Pacífico, Sierra Nevada de Santa Marta.
    Habit
    Hierba
    Conservation
    No Evaluada

    Images

    Distribution

    Native to:

    Belize, Bolivia, Colombia, Costa Rica, Ecuador, Guatemala, Honduras, Jamaica, Leeward Is., Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Southeast, Mexico Southwest, Nicaragua, Panamá, Peru, Trinidad-Tobago, Venezuela, Windward Is.

    Recorded in error in:

    Brazil West-Central

    Isachne arundinacea (Sw.) Griseb. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Spruce, R. [6128], Ecuador K000201732

    First published in Fl. Brit. W. I.: 553 (1864)

    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.
    • 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.
    • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.
    • 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
    • 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.
    • 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.
    • 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.
    • Renvoize, S.A. (1998). Gramineas de Bolivia: 1-644. The Royal Botanic Gardens, Kew.
    • 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