1. Family: Poaceae Barnhart
    1. Genus: Sorghum Moench
      1. Sorghum trichocladum (Rupr. ex Hack.) Kuntze

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

    [GB]
    Habit
    Perennial; caespitose. Culms 100-150 cm long. Culm-nodes bearded. Ligule an eciliate membrane. Leaf-blades 20-40 cm long; 3-8 mm wide.
    Inflorescences
    Inflorescence a panicle with branches tipped by a raceme. Panicle open; oblong; 10-15 cm long. Primary panicle branches simple; 2-4 cm long. Panicle branches capillary; flexuous. Racemes 2-3 cm long; bearing few fertile spikelets; bearing 2-5 fertile spikelets on each. Rhachis fragile at the nodes; ciliate on margins. Rhachis internodes linear. Rhachis internode tip transverse. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels filiform; flattened; 4-5 mm long; villous; with dark brown hairs.
    Spikelets
    Companion sterile spikelets well-developed; containing empty lemmas, or male; linear; dorsally compressed; 4-5 mm long; as long as fertile; separately deciduous. Companion sterile spikelet glumes chartaceous; pubescent; with white hairs; muticous. Companion sterile spikelet lemmas enclosed by glumes. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 4-5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base obtuse.
    Sterile
    Companion sterile spikelets well-developed; containing empty lemmas, or male; linear; dorsally compressed; 4-5 mm long; as long as fertile; separately deciduous. Companion sterile spikelet glumes chartaceous; pubescent; with white hairs; muticous. Companion sterile spikelet lemmas enclosed by glumes.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; dorsally compressed; 4-5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base obtuse.
    Glume
    Glumes dissimilar; with lower wider than upper; exceeding apex of florets; firmer than fertile lemma. Lower glume ovate; 1 length of spikelet; coriaceous; much thinner above; dark brown; without keels; keel-less except near apex. Lower glume surface villous. Lower glume hairs dark brown; 1-3 mm long. Lower glume apex obtuse. Upper glume ovate; coriaceous; much thinner above; without keels.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; hyaline; 2 -veined; acute. Fertile lemma oblong; hyaline; 1 -veined. Lemma apex lobed; 2 -fid; incised 0.33 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 15-25 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.
    Flowers
    Lodicules 2; oblong; fleshy; ciliate. Anthers 3. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp.
    Distribution
    North America: Mexico. South America: Mesoamericana.
    Reference
    Andropogoneae. Fl Nov Gal 1993.

    Images

    Distribution

    Native to:

    Guatemala, Honduras, Mexico Northwest, Mexico Southeast, Mexico Southwest

    Sorghum trichocladum (Rupr. ex Hack.) Kuntze appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Hinton, G.B. [2252], México State K000476333
    Hinton, G.B. [2252], México State K000476334
    Hinton, G.B. [12178], Michoacán K000476335
    Hinton, G.B. [9692], Guerrero K000476332
    Hinton, G.B. [10829], Guerrero K000476336
    Liebmann [24], Mexico K000632976 isosyntype

    First published in Revis. Gen. Pl. 2: 792 (1891)

    Accepted by

    • Vigosa-Mercado, J.L. & Fonseca, R.M. (2017). Flora de Guerrero 75: 1-153. Facultade de Ciencias, UNAM.
    • 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

    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