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This species is accepted, and its native range is E. Jawa to Lesser Sunda Islands (Bali).

[GB]
Morphology General Habit
Perennial. Culms robust; 300-500 cm long. Ligule a ciliolate membrane. Leaf-blades 50-100 cm long; 6-12 mm wide.
Morphology Reproductive morphology Inflorescences
Synflorescence compound; fasciculate; 50-100 cm long; dense. Inflorescence composed of racemes; terminal and axillary; subtended by a spatheole; exserted. Spatheole linear; scarious; without tubercles; glabrous. Racemes 1; single; oblong; 2 cm long; bearing few fertile spikelets; bearing 1 fertile spikelets on each. Rhachis fragile at the nodes. Spikelets in threes. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 2 in the cluster. Pedicels oblong; 0.5 mm long.
Sterile
Basal sterile spikelets well-developed; 4 in number; forming an involucre about the fertile; subsessile; lanceolate; 12-15 mm long; larger than fertile. Basal sterile spikelet glumes glabrous; smooth on margins; acuminate, or attenuate, or setaceously attenuate; lower glume muticous. Companion sterile spikelets well-developed; male; lanceolate; 12-15 mm long; longer than fertile; separately deciduous. Companion sterile spikelet callus linear. Companion sterile spikelet glumes smooth; glabrous. Companion sterile spikelet lemmas 2; enclosed by glumes.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; compressed slightly; 8-10 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base acute; attached obliquely. Basal sterile spikelets well-developed; 4 in number; forming an involucre about the fertile; subsessile; lanceolate; 12-15 mm long; larger than fertile. Basal sterile spikelet glumes glabrous; smooth on margins; acuminate, or attenuate, or setaceously attenuate; lower glume muticous. Companion sterile spikelets well-developed; male; lanceolate; 12-15 mm long; longer than fertile; separately deciduous. Companion sterile spikelet callus linear. Companion sterile spikelet glumes smooth; glabrous. Companion sterile spikelet lemmas 2; enclosed by glumes.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; compressed slightly; 8-10 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus base acute; attached obliquely.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; 1 length of spikelet; coriaceous; without keels. Lower glume surface pubescent. Lower glume hairs dark brown. Upper glume oblong.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; hyaline. Fertile lemma lanceolate; hyaline; without keel; 1 -veined. Lemma apex entire; awned; 1 -awned. Principal lemma awn apical; geniculate; 15-20 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.
Distribution
Asia-tropical: Malesia.
Reference
Andropogoneae. Henrard 2001.

Native to:

Jawa, Lesser Sunda Is.

Themeda idjenensis Jansen appears in other Kew resources:

First published in Acta Bot. Neerl. 1: 482 (1952)

Accepted by

  • Veldkamp, J.F. (2016). A revision of Themeda (Gramineae) in Malesia with a new species from Laos Blumea 61: 29-40.
  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

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 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