1. Family: Poaceae Barnhart
    1. Genus: Sorghum Moench
      1. Sorghum plumosum (R.Br.) P.Beauv.

        This species is accepted, and its native range is Central Malesia to N. & E. Australia.

    [GB]
    Habit
    Perennial. Rhizomes short. Butt sheaths pubescent. Culms erect; 100-300 cm long; 3-6 mm diam.; 4-5 -noded. Culm-nodes glabrous, or pubescent, or bearded. Leaf-sheaths hirsute; with simple hairs, or tubercle-based hairs. Leaf-sheath oral hairs bearded. Ligule a ciliolate membrane, or a ciliate membrane; 1.5-3 mm long. Leaf-blades 15-30 cm long; 4-12 mm wide. Leaf-blade surface glabrous, or hirsute; hairy abaxially, or on both sides. Leaf-blade apex acuminate; filiform.
    Inflorescences
    Inflorescence a panicle with branches tipped by a raceme. Panicle contracted; linear, or lanceolate; 12.5-32(-45) cm long; 2-4 cm wide. Primary panicle branches 1-8 -nate; not whorled; simple; 3-7 cm long. Panicle branches angular; scabrous; pubescent in axils, or bearded in axils; with prominent pulvini. Racemes 2-3.5 cm long; bearing few fertile spikelets; bearing (1-)2-4(-6) fertile spikelets on each. Rhachis fragile at the nodes; ciliate on margins. Rhachis internodes filiform; 4-5 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; 4.5-6 mm long; ciliate.
    Spikelets
    Companion sterile spikelets well-developed; containing empty lemmas; linear; 7-10.5 mm long; as long as fertile; persistent. Companion sterile spikelet glumes chartaceous; 3-7 -veined; villous; acuminate; muticous. Companion sterile spikelet lemmas enclosed by glumes. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; (6-)8-9(-11) mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate; curved; (0.5-)1.3-2.5(-4) mm long; base pungent.
    Sterile
    Companion sterile spikelets well-developed; containing empty lemmas; linear; 7-10.5 mm long; as long as fertile; persistent. Companion sterile spikelet glumes chartaceous; 3-7 -veined; villous; acuminate; muticous. Companion sterile spikelet lemmas enclosed by glumes.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; (6-)8-9(-11) mm long; falling entire; deciduous with accessory branch structures. Spikelet callus cuneate; curved; (0.5-)1.3-2.5(-4) mm long; base pungent.
    Glume
    Glumes dissimilar; with lower wider than upper; exceeding apex of florets; firmer than fertile lemma. Lower glume ovate; 1 length of spikelet; cartilaginous; without keels; keel-less except near apex; 5-7 -veined. Lower glume surface villous. Lower glume apex acute. Upper glume ovate; cartilaginous; without keels; 5-7 -veined. Upper glume surface villous.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic; 0.8 length of spikelet; hyaline; 2 -veined; ciliolate on margins. Fertile lemma oblong; 2-3 mm long; hyaline; 1 -veined. Lemma margins ciliate. Lemma apex dentate; 2 -fid; awned; 1 -awned. Principal lemma awn from a sinus; geniculate; (30-)50-70(-100) mm long overall; with twisted column. Column of lemma awn pubescent; hairy on the spiral. Palea absent or minute.
    Flowers
    Lodicules 2; ciliate. Anthers 3; 3.6-3.8 mm long.
    Fruits
    Caryopsis with adherent pericarp; obovoid; flattened; 3.3-4.3 mm long.
    Distribution
    Asia-tropical: Malesia. Australasia: Australia.
    Reference
    Andropogoneae. Lazarides.

    Images

    Distribution

    Native to:

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

    Introduced into:

    Thailand

    Sorghum plumosum (R.Br.) P.Beauv. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Brown, R. [6192], New South Wales K001050200 isotype

    First published in Ess. Agrostogr.: 132 (1812)

    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

    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