1. Family: Poaceae Barnhart
    1. Genus: Isachne R.Br.
      1. Isachne pubescens Swallen

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

    [GB]
    Habit
    Perennial. Culms rambling, or scandent; 100-200 cm long; 2-3 mm diam. Lateral branches ample. Leaf-sheaths pilose; with tubercle-based hairs; outer margin hairy. Ligule a fringe of hairs; 2-3 mm long. Leaf-blades lanceolate; 7-16 cm long; 10-14 mm wide. Leaf-blade surface pubescent. Leaf-blade apex acuminate.
    Inflorescences
    Inflorescence a panicle. Peduncle pubescent above. Panicle open; oblong; 11-12 cm long; 4 cm wide. Primary panicle branches ascending; rebranched near base. Panicle axis pubescent. Panicle branches pubescent. Spikelets solitary. Fertile spikelets pedicelled.
    Spikelets
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.9-2 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes pubescent.
    Fertile
    Spikelets comprising 2 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 1.9-2 mm long; breaking up at maturity; disarticulating above glumes but not between florets. Rhachilla internodes pubescent.
    Glume
    Glumes deciduous; similar; shorter than spikelet; thinner than fertile lemma. Lower glume oblong; 0.75 length of spikelet; membranous; without keels; 5 -veined. Lower glume surface puberulous; hairy above. Lower glume apex acute. Upper glume ovate; 0.75 length of spikelet; membranous; without keels; 7 -veined. Upper glume surface puberulous; hairy above. Upper glume apex obtuse.
    Florets
    Fertile florets with the lowest dissimilar. Lowest fertile lemma elliptic; 1.8 mm long; 1.8 length of adjacent lemma. Fertile lemma ovate; 1 mm long; coriaceous; without keel. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.
    Flowers
    Anthers 3.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    North America: Mexico. South America: Mesoamericana.
    Reference
    Isachneae. Swallen 1994.

    Distribution

    Native to:

    Belize, Guatemala, Honduras, Mexico Gulf, Mexico Southeast

    Isachne pubescens Swallen appears in other Kew resources:

    First published in Contr. U.S. Natl. Herb. 29: 426 (1950)

    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.
    • Davidse, G. & al. (eds.) (1994). Flora Mesoamericana 6: 1-543. Universidad Nacional Autónoma de México, México, D.F.

    Literature

    Kew Backbone Distributions
    • 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.
    • 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

    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