1. Family: Poaceae Barnhart
    1. Genus: Sorghum Moench
      1. Sorghum bulbosum Lazarides

        This species is accepted, and its native range is NE. Western Australia to N. Northern Territory.

    [GB]
    Habit
    Annual. Culms 130-200 cm long; 2-4 mm diam.; 6 -noded; without nodal roots. Culm-nodes bearded. Ligule an eciliate membrane, or a ciliolate membrane; 1.3-2.3 mm long; scaberulous on abaxial surface, or pubescent on abaxial surface. Leaf-blades 3-5.3 mm wide. Leaf-blade surface glabrous, or pilose; with tubercle-based hairs.
    Inflorescences
    Inflorescence a panicle with branches tipped by a raceme. Panicle open; loose; 14.5-34 cm long; 3-5 cm wide. Primary panicle branches 1-13 -nate; simple; 2-7 cm long; sterile at lowest node. Panicle axis smooth, or scabrous. Panicle branches smooth, or scabrous; glabrous in axils. Racemes 2-2.3 cm long; bearing a triad of spikelets; bearing 1 fertile spikelets on each. Rhachis obsolete. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 2 in the cluster. Pedicels filiform; flattened; 5.8-6 mm long; ciliate.
    Spikelets
    Companion sterile spikelets well-developed; containing empty lemmas, or male; lanceolate; dorsally compressed; 8.5-13 mm long; as long as fertile; persistent. Companion sterile spikelet glumes membranous, or cartilaginous; 7-9 -veined; pubescent, or pilose; eciliate on margins, or ciliate on margins; acuminate, or setaceously attenuate; muticous. Companion sterile spikelet lemmas enclosed by glumes. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; compressed slightly; 10-13 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate; 3-8 mm long; base pungent.
    Sterile
    Companion sterile spikelets well-developed; containing empty lemmas, or male; lanceolate; dorsally compressed; 8.5-13 mm long; as long as fertile; persistent. Companion sterile spikelet glumes membranous, or cartilaginous; 7-9 -veined; pubescent, or pilose; eciliate on margins, or ciliate on margins; acuminate, or setaceously attenuate; muticous. Companion sterile spikelet lemmas enclosed by glumes.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets obovate; dorsally compressed; compressed slightly; 10-13 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate; 3-8 mm long; base pungent.
    Glume
    Glumes dissimilar; with lower wider than upper; exceeding apex of florets; firmer than fertile lemma; shiny. Lower glume oblong; 1 length of spikelet; coriaceous; much thinner above; black; without keels; keel-less throughout, or except near apex; 7-8 -veined. Lower glume lateral veins ribbed. Lower glume surface glabrous. Lower glume margins ciliate. Lower glume apex rostrate. Upper glume ovate; coriaceous; much thinner above; black; without keels; 7 -veined. Upper glume margins ciliate. Upper glume apex acuminate, or setaceously attenuate.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; hyaline; 2 -veined; acute. Fertile lemma ovate; hyaline; 1 -veined. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 55-90 mm long overall; with twisted column. Column of lemma awn ciliate. Palea absent or minute.
    Flowers
    Lodicules 2; oblong; 0.5-0.8 mm long; fleshy; ciliate. Anthers 3; 3-3.3 mm long. Stigmas 2. Ovary glabrous.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid, or obovoid; 4-5 mm long.
    Distribution
    Australasia: Australia.
    Reference
    Andropogoneae. Lazarides 1993.

    Distribution

    Native to:

    Northern Territory, Western Australia

    Sorghum bulbosum Lazarides appears in other Kew resources:

    First published in Austral. Syst. Bot. 4: 609 (1991)

    Accepted by

    • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

    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 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