1. Family: Poaceae Barnhart
    1. Genus: Eragrostis Wolf
      1. Eragrostis trichodes (Nutt.) Alph.Wood

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

    [GB]
    Habit
    Perennial; caespitose. Culms 60-160 cm long. Leaf-sheaths glabrous on surface, or hirsute; outer margin glabrous, or hairy. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs. Leaf-blades 15-40 cm long; 1-8 mm wide. Leaf-blade surface glabrous; hairless except near base.
    Inflorescences
    Inflorescence a panicle. Panicle open; oblong, or ovate; effuse; 35-55 cm long; 7-30 cm wide. Primary panicle branches ascending, or spreading; 7-20 cm long. Panicle branches capillary; sinuous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform; 5-15 mm long.
    Spikelets
    Spikelets comprising 4-18 fertile florets; with diminished florets at the apex. Spikelets lanceolate, or ovate; laterally compressed; 4-10 mm long; 1.5-3 mm wide; breaking up at maturity; rhachilla persistent; retaining paleas.
    Fertile
    Spikelets comprising 4-18 fertile florets; with diminished florets at the apex. Spikelets lanceolate, or ovate; laterally compressed; 4-10 mm long; 1.5-3 mm wide; breaking up at maturity; rhachilla persistent; retaining paleas.
    Glume
    Glumes deciduous; similar; shorter than spikelet. Lower glume lanceolate; 1.8-4 mm long; 1-1.2 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 1.8-3.4 mm long; 0.75-1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.
    Florets
    Fertile lemma ovate; 2.4-3.4 mm long; membranous; yellow and red; mottled with last colour; keeled; 3 -veined. Lemma lateral veins distinct. Lemma apex acute. Palea keels scaberulous. Apical sterile florets resembling fertile though underdeveloped.
    Fruits
    Caryopsis with adherent pericarp; orbicular, or square; 0.7-1.5 mm long.
    Distribution
    Pacific: north-central. North America: northwest USA, north-central USA, south-central USA, and southeast USA.
    Reference
    Eragrostideae. Gr Texas 1993.

    Images

    Distribution

    Native to:

    Alabama, Arkansas, Colorado, Illinois, Indiana, Iowa, Kansas, Louisiana, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New Mexico, New York, Ohio, Oklahoma, South Dakota, Tennessee, Texas, Virginia, Wisconsin, Wyoming

    Extinct in:

    Saudi Arabia

    Introduced into:

    France, Germany, India, Saudi Arabia

    Eragrostis trichodes (Nutt.) Alph.Wood appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Nuttall, T. [s.n.], USA K000907528
    Lindheimer, F. [736], USA Eragrostis pilifera K000907529

    First published in Class-book Bot.: 796 (1861)

    Accepted by

    • Engelmaier, P. & Wilhalm, T. (2018). Alien grasses (Poaceae) in the flora of the Eastern Alps Neilreichia 9: 177-245.
    • Cope, T.A., Knees, S.G. & Miller, A.G. (2007). Flora of the Arabian peninsula and Socotra 5(1): 1-387. Edinburgh University Press.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

    Literature

    Kew Backbone Distributions
    • Cope, T.A., Knees, S.G. & Miller, A.G. (2007). Flora of the Arabian peninsula and Socotra 5(1): 1-387. Edinburgh University Press.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

    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