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Thamnocalamus spathiflorus 

young culm sheath apex with few hairs culm sheath base with sparse hairs leaf sheaths with prominent oral setae
sheaths of young shoot sheaths with sparse hairs unswollen culm node light wax at top of internode full branch complement sheathing sheath scars between branches stout scabrous oral setae
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Precise origin unknown
see account in Flora of China
see listing in ABS Species & Sources List
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No entry in Kew's GrassBase - The Online World Grass Flora
No entry in Kew's GrassBase - The Online World Grass Flora

Thamnocalamus spathiflorus (Trin.) Munro, Trans. Linn. Soc. London 26(1): 34 (1868).

 Synonym: Thamnocalamus aristatus (Gamble) E.G. Camus.

  Missouri Botanical Garden's Tropicos Database of Names  TROPICOS

    International Plant Names Index   IPNI

   Multilingual Multiscript Plant Names Database  MMPND


Plants forming dense clumps. Rhizomes pachymorph, neck 2--12 cm long. Culms  to 3 m, to 1.5 cm in diam., nodding to pendulous; internodes to 15 cm, terete, lightly blue-grey waxy at first, becoming yellow or reddened with exposure, smooth, glabrous, wall thick; nodes irregularly swollen, supra-nodal ridge prominent, sheath scar thin; branches initially (3)-5-(7), strong. Culm sheaths deciduous, much shorter than internodes, triangular, tough, smooth, light purple-green, sparsely to densely brown setose, apex narrow, margins distally c. 1mm white-ciliate; auricles absent or very small; oral setae none or few, erect, 2-8mm; ligule to 3 mm, ciliate, tomentose; blade triangular, lightly pubescent, usually erect, reflexed towards base of culm, very persistent, margins ciliate. Leaves 3--8 per ultimate branch; sheath distally lightly tomentose, external margin ciliate, often distally reddened; auricles absent on terminal sheaths to small but distinct on basal sheaths, rounded, often red/purple; oral setae, erect or curved, 3-7 mm, basally stout and often red, scabrous, with slender white tips; ligule convex, to 1 mm, tomentose, ciliate to 1 mm; external ligule prominently white-ciliate to 3 mm; blade lanceolate, to 10 1.0 cm, base rounded, glabrous, secondary veins 3-4-paired, margins distally spinescent, transverse veins distinct, petiole glabrous, often red. Synflorescence dense panicles with 1-4 erect branches, supported by persistent sheaths. Name spathiflorus Latin, ‘flowers sheathed’.

This species, from E Nepal, Sikkim, Bhutan and SE Tibet, is characterised by prominent stout leaf sheath oral setae from variable auricles and sparse culm sheath hairs. It can form more open clumps than the other species.







Precise source not known First introduced in the 19th Century, probably from Sikkim. Various more recent introductions have also been made.

[crassinodus] [nepalensis] [spathiflorus]