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This species is accepted, and its native range is E. India, China (Yunnan), S. Myanmar.

[GB]
Morphology General Habit
Annual; culms solitary, or caespitose; clumped loosely. Culms erect, or geniculately ascending; slender; 15-30 cm long. Leaf-sheaths mostly shorter than adjacent culm internode; glabrous on surface. Ligule an eciliate membrane; 1 mm long; truncate. Leaf-blades flat, or conduplicate; 5-10 cm long; 2-4 mm wide; flaccid. Leaf-blade surface smooth; glabrous. Leaf-blade margins tuberculate-ciliate; hairy at base. Leaf-blade apex acute.
Morphology Reproductive morphology Inflorescences
Synflorescence compound; scanty; 15-30 cm long (whole culm); with principal spatheoles embracing a compact fascicle of racemes, each subtended by a subsidiary bract. Inflorescence composed of racemes; terminal and axillary; subtended by a spatheole; enclosed. Spatheole lanceolate; 2 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; 0.5 mm long.
Sterile
Basal sterile spikelets well-developed; 4 in number; forming an involucre about the fertile; with both pairs arising at about the same level; subsessile; male; lanceolate; 4-5 mm long; equalling fertile, or larger than fertile. Basal sterile spikelet glumes chartaceous; tuberculate; setose; lower glume muticous. Companion sterile spikelets well-developed; comprising 2 subequal glumes without lemmas; linear; 5-6 mm long; longer than fertile; separately deciduous. Companion sterile spikelet callus linear. Companion sterile spikelet glumes smooth; glabrous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; subterete; 4 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus oblong; 0.5-1 mm long; bearded; base obtuse; attached obliquely. Spikelet callus hairs tawny. Basal sterile spikelets well-developed; 4 in number; forming an involucre about the fertile; with both pairs arising at about the same level; subsessile; male; lanceolate; 4-5 mm long; equalling fertile, or larger than fertile. Basal sterile spikelet glumes chartaceous; tuberculate; setose; lower glume muticous. Companion sterile spikelets well-developed; comprising 2 subequal glumes without lemmas; linear; 5-6 mm long; longer than fertile; separately deciduous. Companion sterile spikelet callus linear. Companion sterile spikelet glumes smooth; glabrous.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; subterete; 4 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus oblong; 0.5-1 mm long; bearded; base obtuse; attached obliquely. Spikelet callus hairs tawny.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; 1 length of spikelet; coriaceous; much thinner above; without keels. Lower glume surface flat; puberulous. Upper glume oblong.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; hyaline. Fertile lemma linear; hyaline; without keel; 1 -veined. Lemma apex entire; awned; 1 -awned. Principal lemma awn apical; geniculate; 3.8-5.5 mm long overall; with twisted column. Column of lemma awn hirtellous. Palea absent or minute.
Distribution
Asia-temperate: China. Asia-tropical: Indo-China.
Reference
Andropogoneae. Fl China 2001.

Native to:

China South-Central, India, Myanmar

Introduced into:

Kansas

Themeda helferi Hack. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Jan 1, 1889 Griffith [6809], India K000245966 isotype
Jan 1, 1889 Helfer, J.W. [6809], Myanmar K000245965 isotype
Helfer, J.W. [s.n.], Myanmar K000911711
Helfer, J.W. [68], Indian Subcontinent K000911712
Helfer, J.W. [267], Indian Subcontinent K001040205

First published in A.L.P.P.de Candolle & A.C.P.de Candolle, Monogr. Phan. 6: 665 (1889)

Accepted by

  • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

Literature

Kew Backbone Distributions

  • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.
  • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

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 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