1. Family: Poaceae Barnhart
    1. Genus: Andropogon L.
      1. Andropogon diuturnus Sohns

        This species is accepted, and its native range is Venezuela.

    [GB]
    Habit
    Perennial; caespitose; clumped densely. Culms erect; 20-65 cm long. Leaves cauline. Leaf-sheaths glabrous on surface. Leaf-sheath oral hairs lacking, or ciliate. Leaf-sheath auricles erect. Ligule a ciliate membrane; 1.5-1.7 mm long. Leaf-blades 5-15 cm long; 0.5-5 mm wide. Leaf-blade midrib prominent beneath. Leaf-blade surface smooth, or scaberulous; rough on both sides.
    Inflorescences
    Inflorescence composed of racemes; terminal and axillary. Racemes (1-)2; paired; 4-5 cm long. Rhachis fragile at the nodes; villous on margins. Rhachis hairs evenly distributed. Rhachis internodes filiform. Rhachis internode tip transverse; cupuliform; with simple rim. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels filiform; 3-5 mm long; villous; hairy all along.
    Sterile
    Companion sterile spikelets represented by single glumes; linear; 1.1-2.3 mm long; separately deciduous. Companion sterile spikelet glumes chartaceous; glabrous; acute; muticous.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 4.1-6 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base obtuse; inserted. Companion sterile spikelets represented by single glumes; linear; 1.1-2.3 mm long; separately deciduous. Companion sterile spikelet glumes chartaceous; glabrous; acute; muticous.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 4.1-6 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base obtuse; inserted.
    Glume
    Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 1 length of spikelet; coriaceous; 2-keeled; keeled laterally. Lower glume intercarinal veins absent. Lower glume surface concave. Upper glume linear; coriaceous; 1-keeled. Upper glume muticous.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; 0.9-1.5 mm long; hyaline; 2 -veined; ciliolate on margins. Fertile lemma lanceolate; hyaline; without keel; 3 -veined. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 7.5-14 mm long overall; with twisted column. Column of lemma awn glabrous. Palea 1-2 mm long.
    Flowers
    Lodicules 2; cuneate; 0.5-0.7 mm long; fleshy. Anthers 3; 1-1.5 mm long.
    Distribution
    South America: northern South America.
    Reference
    Andropogoneae. Sohns 1995.

    Images

    Distribution

    Native to:

    Venezuela

    Andropogon diuturnus Sohns appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Jan 1, 1956 Maguire, B. [35411], Venezuela K000632878 paratype
    Jan 1, 1956 Maguire, B. [35411], Venezuela K000632879
    Jan 1, 1956 Steyermark, J.A., Wurdack, J.J. [1066], Venezuela K000632877 paratype

    First published in Mem. New York Bot. Gard. 9: 406 (1957)

    Accepted by

    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.
    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela.

    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