1. Family: Poaceae Barnhart
    1. Genus: Sorghum Moench
      1. Sorghum timorense (Kunth) Buse

        This species is accepted, and its native range is Lesser Sunda Islands to N. & Central Australia.

    [GB]
    Habit
    Annual. Culms erect, or geniculately ascending; 30-300 cm long; 7-13 mm diam.; without nodal roots, or with prop roots. Culm-internodes distally pruinose, or glabrous. Culm-nodes constricted, or flush with internodes; pubescent, or bearded. Lateral branches sparse. Leaf-sheaths glabrous on surface, or puberulous. Leaf-sheath oral hairs lacking, or bearded. Ligule an eciliate membrane; 1.3-3.5 mm long. Leaf-blades straight, or curled; 30-60 cm long; 5-10 mm wide. Leaf-blade surface glabrous, or pubescent; with tubercle-based hairs. Leaf-blade apex filiform.
    Inflorescences
    Inflorescence a panicle with branches tipped by a raceme. Panicle open; dense, or loose; 15-40 cm long. Primary panicle branches simple; 2-11 cm long. Panicle axis smooth. Panicle branches angular, or flat; scabrous; rough distally; villous; hairy at tip; glabrous in axils, or bearded in axils; with prominent pulvini. Racemes bearing few fertile spikelets; 2-10 fertile spikelets on each. Rhachis fragile at the nodes; ciliate on margins. Rhachis internodes linear; 5-6 mm long. Rhachis internode tip oblique. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels filiform; flattened; 5 mm long; ciliate; with white hairs.
    Spikelets
    Companion sterile spikelets well-developed; containing empty lemmas, or male; lanceolate; dorsally compressed; 7-8 mm long; longer than fertile; separately deciduous. Companion sterile spikelet callus square; 1 mm long. Companion sterile spikelet glumes chartaceous; 7-10 -veined; glabrous, or pilose; ciliate on margins; muticous. Companion sterile spikelet lemmas enclosed by glumes. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or oblong; dorsally compressed; 6-7 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus square; 0.3-1.3 mm long; pilose; base obtuse. Spikelet callus hairs tawny; 2 mm long.
    Sterile
    Companion sterile spikelets well-developed; containing empty lemmas, or male; lanceolate; dorsally compressed; 7-8 mm long; longer than fertile; separately deciduous. Companion sterile spikelet callus square; 1 mm long. Companion sterile spikelet glumes chartaceous; 7-10 -veined; glabrous, or pilose; ciliate on margins; muticous. Companion sterile spikelet lemmas enclosed by glumes.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or oblong; dorsally compressed; 6-7 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus square; 0.3-1.3 mm long; pilose; base obtuse. Spikelet callus hairs tawny; 2 mm long.
    Glume
    Glumes dissimilar; with lower wider than upper; exceeding apex of florets; firmer than fertile lemma; dull, or shiny. Lower glume ovate; 1 length of spikelet; coriaceous; much thinner above; 2-keeled; keeled above; 8-9 -veined. Lower glume surface asperulous; rough above; glabrous to pilose; with simple hairs, or tubercle-based hairs. Lower glume margins eciliate, or ciliate. Lower glume hairs yellow. Lower glume apex muticous, or mucronate. Upper glume ovate; coriaceous; much thinner above; without keels; 5-7 -veined. Upper glume surface asperulous; rough above; glabrous to pilose; with simple hairs, or tubercle-based hairs. Upper glume hairs tawny. Upper glume apex setaceously attenuate.
    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; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; 30-45 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.
    Flowers
    Lodicules 2; oblong; 0.5-0.9 mm long; fleshy; glabrous, or ciliate. Anthers 3; 2.6-5 mm long; yellow, or orange. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp; ellipsoid, or obovoid; dorsally compressed; 2.6 mm long.
    Distribution
    Asia-tropical: Malesia. Australasia: Australia.
    Reference
    Andropogoneae. Lazarides 1993.

    Distribution

    Native to:

    Lesser Sunda Is., Maluku, New Guinea, Northern Territory, Queensland, Western Australia

    Sorghum timorense (Kunth) Buse appears in other Kew resources:

    First published in W.H.de Vriese, Pl. Ind. Bat. Orient.: 103 (1857)

    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