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This species is accepted, and its native range is Sri Lanka to N. Australia.

[GB]
Morphology General Habit
Annual; caespitose. Culms erect; 20-120 cm long. Leaves mostly basal. Ligule an eciliate membrane; 1 mm long. Leaf-blade base broadly rounded. Leaf-blades flat, or conduplicate; 5-30 cm long; 4-7 mm wide. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Synflorescence compound; fasciculate. Inflorescence composed of racemes; terminal and axillary; subtended by a spatheole; enclosed. Spatheole lanceolate; 2.5-3.5 cm long; scarious; without tubercles; glabrous. Racemes 1; single; cuneate; bearing few fertile spikelets; bearing 1 fertile spikelets on each. Rhachis fragile at the nodes. Spikelets in threes (basal paired). Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 2 in the cluster. Pedicels oblong; 1 mm long; tip oblique.
Morphology Reproductive morphology Inflorescences Spikelets
Basal sterile spikelets represented by a single scale; 4 in number; forming an involucre about the fertile; with both pairs arising at about the same level; subsessile; 6-10 mm long; equalling fertile. Basal sterile spikelet glumes smooth; glabrous; lower glume muticous. Companion sterile spikelets well-developed; comprising 2 subequal glumes without lemmas; lanceolate; 6 mm long; shorter than fertile; separately deciduous. Companion sterile spikelet callus linear; 2-3 mm long; truncate. Companion sterile spikelet glumes herbaceous; glabrous; acuminate. Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; subterete; 8-10 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus linear; 3 mm long; bearded; base pungent; attached obliquely. Spikelet callus hairs red.
Sterile
Basal sterile spikelets represented by a single scale; 4 in number; forming an involucre about the fertile; with both pairs arising at about the same level; subsessile; 6-10 mm long; equalling fertile. Basal sterile spikelet glumes smooth; glabrous; lower glume muticous. Companion sterile spikelets well-developed; comprising 2 subequal glumes without lemmas; lanceolate; 6 mm long; shorter than fertile; separately deciduous. Companion sterile spikelet callus linear; 2-3 mm long; truncate. Companion sterile spikelet glumes herbaceous; glabrous; acuminate.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; subterete; 8-10 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus linear; 3 mm long; bearded; base pungent; attached obliquely. Spikelet callus hairs red.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; 1 length of spikelet; coriaceous; dark brown; without keels; 7 -veined. Lower glume surface pilose; hairy above. Lower glume hairs dark brown. Lower glume apex truncate. Upper glume oblong; coriaceous; with membranous margins; 3 -veined. Upper glume surface pilose; hairy above. Upper glume margins ciliate. Upper glume hairs dark brown. Upper glume apex truncate.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; 2.8 mm long; hyaline; ciliate on margins. Fertile lemma oblong; 3 mm long; hyaline; without keel; 1 -veined. Lemma apex entire; awned; 1 -awned. Principal lemma awn apical; geniculate; 50-70 mm long overall; with twisted column. Column of lemma awn hispidulous. Palea absent or minute.
Morphology Reproductive morphology Flowers
Anthers 1.4 mm long.
Distribution
Asia-temperate: China. Asia-tropical: India, Indo-China, Malesia, and Papuasia. Australasia: Australia. Pacific: southwestern. South America: Caribbean.
Reference
Andropogoneae. Gilliland 1993.

Native to:

Andaman Is., Bismarck Archipelago, Borneo, Jawa, Laos, Lesser Sunda Is., Malaya, Maluku, Myanmar, New Guinea, Nicobar Is., Northern Territory, Philippines, Queensland, South China Sea, Sri Lanka, Sulawesi, Sumatera, Thailand, Vietnam

Introduced into:

Cuba, Fiji, Jamaica, Maryland, Puerto Rico, Virginia, Windward Is.

Themeda arguens (L.) Hack. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Kerr, A.F.G. [7956], Thailand K000620599
Kerr, A.F.G. [11090], Thailand K000620600
Kerr, A.F.G. [11090], Thailand K000620601
Kerr, A.F.G. [11322], Thailand K000620602
Kerr, A.F.G. [13520], Thailand K000620603
Kerr, A.F.G. [13520], Thailand K000620604
Larsen, K. [8146], Thailand K000688914
Larsen, K. [8298], Thailand K000688915
van Beusekom, C.F. [3603], Thailand K000688916
King's collector [s.n.], Andaman Is. K000911716
Zollinger, H. [373], Indonesia K000290005 isotype
Pierre, L. [s.n.], Vietnam K000290051 isosyntype
Brown, R. [6195], Australia K000911785
Teijsmann, J.E. [s.n.] K000911693
Laegaard, S. [21855], Thailand K000688917
Teysmann, J. E. [s.n.], Indonesia K000911694
de la Savinièrre, É. [209], Indonesia K000911695

First published in A.L.P.P.de Candolle & A.C.P.de Candolle, Monogr. Phan. 6: 657 (1889)

Accepted by

  • Middleton, D.J. & al. (eds.) (2019). Flora of Singapore 7: 1-525. Singapore Botanic Gardens.
  • Veldkamp, J.F. (2016). A revision of Themeda (Gramineae) in Malesia with a new species from Laos Blumea 61: 29-40.
  • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
  • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
  • Pandey, R.P. & Dilwakar, P.G. (2008). An integrated check-list flora of Andaman and Nicobar islands, India Journal of Economic and Taxonomic Botany 32: 403-500.
  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Kress, W.J., DeFilipps, R.A., Farr, E. & Kyi, D.Y.Y. (2003). A Checklist of the Trees, Shrubs, Herbs and Climbers of Myanmar Contributions from the United States National Herbarium 45: 1-590.
  • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
  • Turner, I.M. (1995 publ. 1997). A catalogue of the Vascular Plants of Malaya Gardens' Bulletin Singapore 47(2): 347-655.
  • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.
  • Gilliland, H.B. (1971). A revised flora of Malaya 3: 1-319. The Royal Botanic Gardens, Singapore.
  • 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

  • Veldkamp, J.F. (2016). A revision of Themeda (Gramineae) in Malesia with a new species from Laos Blumea 61: 29-40.
  • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
  • Clayton, W.D. & Snow, N. (2010). A key to Pacific Grasses: 1-107. Kew Publishing, Royal Botanic Gardens, Kew.
  • Pandey, R.P. & Dilwakar, P.G. (2008). An integrated check-list flora of Andaman and Nicobar islands, India Journal of Economic and Taxonomic Botany 32: 403-500.
  • Kress, W.J., DeFilipps, R.A., Farr, E. & Kyi, D.Y.Y. (2003). A Checklist of the Trees, Shrubs, Herbs and Climbers of Myanmar Contributions from the United States National Herbarium 45: 1-590.
  • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.
  • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.
  • Peekel, P.G. (1984). Flora of the Bismarck Archipelago for Naturalists: 1-638. Office of Forests, Division of Botany, Lae, Papua New Guinea.
  • Gilliland, H.B. (1971). A revised flora of Malaya 3: 1-319. The Royal Botanic Gardens, Singapore.
  • Henty, E.E. (1969). A manual of the grasses of New Guinea: 1-215. Division of Botany, Dpt. of Forests, LAE, New Guinea.
  • Masamune, G. (1942). Enumeratio phanerogamarum Bornearum: 1-739. Taihoku, Formosa.
  • Camus, E.G. & Camus, A. in H. Lecomte (1922). Flore Générale de l'indo-Chine 1(3): 193-336.

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Herbarium Catalogue Specimens
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Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. 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 2021. 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