1. Family: Poaceae Barnhart
    1. Genus: Dichanthium Willemet
      1. Dichanthium sericeum (R.Br.) A.Camus

        This species is accepted, and its native range is Indo-China to Australia.

    [FZ]

    Gramineae, T. A. Cope. Flora Zambesiaca 10:4. 2002

    Habit
    Caespitose perennial with short rhizomes; culms up to 100 cm high, robust, erect or slightly decumbent; nodes exposed and bearded; internodes glabrous; leaf sheaths glabrous to pilose; ligule a scarious membrane up to 1.5 mm long; leaf laminas up to 15 cm long, linear-lanceolate, glabrous to pilose throughout.
    Inflorescences
    Racemes 1–15, digitate, sessile to subsessile, white-villous, the culm below the inflorescence glabrous; rhachis internodes and pedicels thinly pilose; the lowermost 1–6 spikelet pairs usually homogamous, male or neuter.
    Sessile
    Sessile spikelets elliptic-oblong; inferior glume pilose or rarely glabrous on the back below the middle, always with tubercle-based cilia (up to 6 mm long) along the margins and forming a transverse subapical fringe; superior glume slightly longer than the inferior, glabrous; inferior floret barren, the lemma hyaline; superior floret stipitiform, the lemma hyaline, without a palea; awn c. 30 mm long; anthers c. 2 mm long.
    Spikelets
    Pedicelled spikelets c. 4 mm long, obovate-oblong. Sessile spikelets elliptic-oblong; inferior glume pilose or rarely glabrous on the back below the middle, always with tubercle-based cilia (up to 6 mm long) along the margins and forming a transverse subapical fringe; superior glume slightly longer than the inferior, glabrous; inferior floret barren, the lemma hyaline; superior floret stipitiform, the lemma hyaline, without a palea; awn c. 30 mm long; anthers c. 2 mm long.
    Pedicelled
    Pedicelled spikelets c. 4 mm long, obovate-oblong.
    [GB]
    Habit
    Perennial; caespitose. Culms erect; of moderate stature; 30-80 cm long; 4 -noded. Culm-internodes channelled. Culm-nodes bearded. Lateral branches lacking, or sparse. Leaf-sheaths glabrous on surface, or pilose; with tubercle-based hairs. Ligule an eciliate membrane; 1 mm long. Leaf-blades 8-15 cm long; 2-4 mm wide; mid-green, or glaucous. Leaf-blade midrib evident. Leaf-blade surface glabrous, or pilose; with tubercle-based hairs. Leaf-blade apex attenuate.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1-6; single, or paired, or digitate; 4-7 cm long. Rhachis fragile at the nodes; subterete; ciliate on margins. Rhachis hairs lengthening towards internode tip; 1-1.5 mm long. Rhachis internodes linear; 2 mm long. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels linear; 2 mm long; without a translucent median line; ciliate; hairy all along but hairs longer above; with 1-1.5 mm long hairs.
    Spikelets
    Basal sterile spikelets well-developed; 2-6 in number; barren; smaller than fertile. Basal sterile spikelet lemmas awnless. Companion sterile spikelets well-developed; containing empty lemmas; obovate; 3 mm long; shorter than fertile; separately deciduous. Companion sterile spikelet glumes 8 -veined; ciliate on margins. Companion sterile spikelet lemmas enclosed by glumes; muticous. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 4 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pubescent; base obtuse; attached transversely.
    Sterile
    Basal sterile spikelets well-developed; 2-6 in number; barren; smaller than fertile. Basal sterile spikelet lemmas awnless. Companion sterile spikelets well-developed; containing empty lemmas; obovate; 3 mm long; shorter than fertile; separately deciduous. Companion sterile spikelet glumes 8 -veined; ciliate on margins. Companion sterile spikelet lemmas enclosed by glumes; muticous.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 4 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pubescent; base obtuse; attached transversely.
    Glume
    Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; 1 length of spikelet; chartaceous; much thinner above; without keels; keel-less except near apex; 6-8 -veined. Lower glume surface flat, or concave; tuberculate (along fringe); pubescent; hairy below; with a transverse fringe of hair. Lower glume margins ciliate. Lower glume hairs 5-6 mm long. Lower glume apex truncate, or obtuse. Upper glume lanceolate; 1-keeled; 3 -veined. Upper glume apex erose; truncate.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate, or ovate; 1.5-2.5 mm long; hyaline; obtuse, or acute. Fertile lemma linear; hyaline; without keel; 1 -veined. Lemma apex entire; awned; 1 -awned. Principal lemma awn apical; geniculate; 25 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.
    Flowers
    Anthers 3; 1 mm long.
    Fruits
    Caryopsis with adherent pericarp; obovoid.
    Distribution
    Africa: southern tropical. Asia-tropical: Malesia and Papuasia. Australasia: Australia. Pacific: southwestern, south-central, and north-central. North America: south-central USA.
    Reference
    Andropogoneae. Fl NSW 1993.
    Diagnostic
    Peduncle moderately stout.

    Images

    Distribution

    Native to:

    Cambodia, Laos, Lesser Sunda Is., New Caledonia, New Guinea, New South Wales, Northern Territory, Philippines, Queensland, Solomon Is., South Australia, Tasmania, Victoria, Vietnam, Western Australia

    Introduced into:

    Czechoslovakia, Florida, Hawaii, Marquesas, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mississippi, Pakistan, Texas, Zimbabwe

    Dichanthium sericeum (R.Br.) A.Camus appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Apr 1, 1965 Brown, R. [6178], Australia K001097591 isolectotype
    Apr 1, 1965 Brown, R. [6178], Australia K001097592 isolectotype
    Jun 1, 1964 Domin, K. [s.n.], Queensland K001050498 Unknown type material
    Jun 1, 1964 Domin, K. [s.n.], Queensland K001050499 Unknown type material
    Jun 1, 1964 Domin, K. [s.n.], Queensland K001050500 syntype
    Jun 1, 1964 Domin, K. [s.n.], Queensland K001050501 syntype
    Cuming, H. [1398], Philippines K000290068 isotype
    Cuming, H. [1398], Philippines K000290069 isotype
    Mueller, F. [s.n.], Australia K001050494
    Brown, R. [6178], Queensland K001050492 syntype
    Bick, E.W. [12], Queensland K001050488 isotype
    Bick, E.W. [12], Queensland K001050489 isotype
    Stuart, J.M. [s.n.], Australia K001050496
    Fitzalan, E.F.A. [s.n.], Queensland K001050493
    Bowman, E.M. [s.n.], Queensland K001050495 lectotype
    s.coll. [s.n.], Western Australia K001050490
    Wright, T.G. [s.n.], Queensland K001050497 isotype

    First published in Bull. Mus. Natl. Hist. Nat. 27: 549 (1921)

    Accepted by

    • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
    • Davidse, G. & al. (eds.) (2009). Flora Mesoamericana 4(1): 1-855. Universidad Nacional Autónoma de México, México, D.F.
    • 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.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
    • Cope, T.A. (2002). Flora Zambesiaca 10(4): 1-190. Royal Botanic Gardens, Kew.
    • Henty, E.E. (1969). A manual of the grasses of New Guinea: 1-215. Division of Botany, Dpt. of Forests, LAE, New Guinea.

    Literature

    Kew Backbone Distributions
    • Danihelka, J. Chrtek, J. & Kaplan, Z. (2012). Checklist of vascular plants of the Czech Republic Preslia. Casopsi Ceské Botanické Spolecnosti 84: 647-811.
    • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, 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.
    • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
    • Cope, T.A. (2002). Flora Zambesiaca 10(4): 1-190. Royal Botanic Gardens, Kew.
    • Cope, T.A. (1982). Flora of Pakistan 143: 1-678. Department of Botany, University of Karachi, Karachi.
    • Henty, E.E. (1969). A manual of the grasses of New Guinea: 1-215. Division of Botany, Dpt. of Forests, LAE, New Guinea.
    • Camus, E.G. & Camus, A. in H. Lecomte (1922). Flore Générale de l'indo-Chine 1(3): 193-336.

    Sources

    Flora Zambesiaca
    Flora Zambesiaca
    http://creativecommons.org/licenses/by-nc-sa/3.0

    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 2020. 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 2020. 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