Gelidocalamus T.H.Wen
  • J. Bamboo Res. 1(1): 21 (1982) 

Notes: Distribution: S. China, Nansei-shoto to Taiwan

General Description

HABIT Perennial. Rhizomes elongated; leptomorph. Culms erect; 76-259.3-780 cm long; woody. Culm-internodes terete. Culm-nodes flush with internodes (2/4), or swollen (2/4). Lateral branches suffrutescent (11/11). Branch complement three (2/9), or several (5/9), or many (5/9). Culm-sheaths persistent (4/8), or deciduous (4/8); without auricles (9/11), or auriculate (2/11). Culm-sheath blade linear (9/11), or lanceolate (3/11), or triangular (1/11). Ligule an eciliate membrane (10), or a ciliolate membrane (2). Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades linear (1), or lanceolate (11), or oblong (8), or ovate (1). Leaf-blade venation without cross veins (2), or with distinct cross veins (10). INFLORESCENCE Inflorescence a panicle (3/3). Panicle open (3/3). Spikelets solitary (3/3). Fertile spikelets pedicelled (3/3). FERTILE SPIKELETS Spikelets comprising 2 fertile florets (1/3), or 3-4 fertile florets (3/3), or 5 fertile florets (2/3); with diminished florets at the apex (3/3). Spikelets lanceolate (2/3), or oblong (1/3); subterete (3/3); 5-8.333-14 mm long; breaking up at maturity (3/3); disarticulating below each fertile floret (3/3). Rhachilla internodes glabrous (2/3), or pubescent (1/3). GLUMES Glumes persistent (3/3); shorter than spikelet (3/3). Lower glume lanceolate (3/3); chartaceous (1/1); without keels (1/1); 1 -veined (1/1). Lower glume lateral veins absent (1/3), or distinct (2/3). Lower glume apex acuminate (1/1). Upper glume lanceolate (3/3); chartaceous (1/1); without keels (1/1); 5 -veined (1/1). Upper glume apex acuminate (1/1). FLORETS Fertile lemma lanceolate (3/3); chartaceous (3/3); without keel (3/3); 5 -veined (1/2), or 7 -veined (1/2). Lemma apex acuminate (2/2). Palea 1-1.033-1.1 length of lemma. Apical sterile florets resembling fertile though underdeveloped (1/3), or distinct from fertile (2/3). FLOWER Lodicules 3 (3/3); glabrous (2/3), or ciliate (1/3). Anthers 3 (3/3). Stigmas 1 (1/3), or 2 (3/3). Ovary glabrous (2/2). FRUIT Caryopsis with adherent pericarp (1/1); obovoid (1/1). DISTRIBUTION Temperate Asia.

Distribution Map

  • Native distribution
Found in
  • Asia-Temperate China China South-Central
  • China Southeast
  • Eastern Asia Nansei-shoto
  • Taiwan


  • 1 Govaerts, R.H.A. (2011). World checklist of selected plant families published update. Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

 Information From

GrassBase - The Online World Grass Flora
Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora. [accessed 24 January 2012; 14:30 GMT]
  • A © Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from
  • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
World Checklist of Selected Plant Families
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; Retrieved 2011 onwards
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