Chimonocalamus Hsueh f. & T.P.Yi
  • Acta Bot. Yunnan. 1: 76 (1979) 


Notes: Distribution: E. Himalaya to SC. China and Indo-China

General Description

HABIT Perennial. Rhizomes short; pachymorph. Culms erect (15/15); 150-497.6-1000 cm long; woody; with root thorns from the nodes (14/14). Culm-internodes terete (15), or quadrangular (1). Culm-nodes swollen (3/3). Lateral branches dendroid. Branch complement three (5/9), or several (5/9), or many (1/9); in a horizontal line (1/6), or in an irregular line (5/6); with subequal branches (3/4), or 3 branches dominant (1/4). Culm-sheaths tardily deciduous (1/9), or deciduous (8/9); without auricles (10/12), or auriculate (2/12). Culm-sheath blade linear (4/14), or lanceolate (6/14), or triangular (6/14). Leaf-sheath auricles absent (15), or falcate (1). Ligule an eciliate membrane (14), or a ciliolate membrane (1), or a ciliate membrane (1). Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades persistent (10), or deciduous at the ligule (6); linear (8), or lanceolate (13), or elliptic (1), or oblong (1); herbaceous (15), or chartaceous (1). Leaf-blade venation without cross veins (7), or with distinct cross veins (9). INFLORESCENCE Inflorescence a panicle (7/7). Panicle open (7/7). Spikelets solitary (7/7). Fertile spikelets pedicelled (7/7). FERTILE SPIKELETS Spikelets comprising 2 fertile florets (1/7), or 3 fertile florets (3/7), or 4 fertile florets (2/7), or 5-7 fertile florets (5/7), or 8 fertile florets (3/7), or 9-10 fertile florets (1/7); with diminished florets at the apex (7/7). Spikelets linear (6/7), or lanceolate (1/7), or oblong (1/7); laterally compressed (7/7); 8-35.42-80 mm long; breaking up at maturity (7/7); disarticulating below each fertile floret (7/7). Rhachilla internodes pubescent (2/7), or pilose (5/7). GLUMES Glumes persistent (7/7); shorter than spikelet (7/7). Lower glume lanceolate (4/4), or ovate (3/4); chartaceous (4/4); without keels (1/3), or 1-keeled (2/3); 3 -veined (1/2), or 5-9 -veined (1/2). Lower glume surface smooth (6/7), or scabrous (1/7); glabrous (6/7), or puberulous (1/7). Lower glume apex acute (4/4); muticous (3/4), or mucronate (1/4). Upper glume lanceolate (4/4), or ovate (4/4); chartaceous (4/4); without keels (4/4); 5 -veined (2/3), or 6-7 -veined (1/3), or 9 -veined (1/3). Upper glume surface smooth (5/7), or asperulous (1/7), or scabrous (1/7); glabrous (6/7), or puberulous (1/7). Upper glume apex acute (2/4), or acuminate (2/4); muticous (2/4), or mucronate (2/4). FLORETS Fertile lemma lanceolate (6/7), or ovate (2/7); chartaceous (7/7); without keel (7/7); 5-6 -veined (1/4), or 7 -veined (2/4), or 9 -veined (2/4). Lemma surface glabrous (4/7), or pubescent (3/7). Lemma margins eciliate (6/7), or ciliate (1/7). Lemma apex acute (1/3), or acuminate (1/3), or setaceously attenuate (1/3). Palea 1-1.041-1.1 length of lemma. Palea keels eciliate (5/7), or ciliolate (1/7), or ciliate (1/7). Palea apex dentate (2/2); muticous (6/7), or with excurrent keel veins (1/7). Apical sterile florets resembling fertile though underdeveloped (7/7). FLOWER Lodicules 3 (7/7); membranous (6/6); glabrous (3/7), or ciliate (4/7). Anthers 3 (7/7). Stigmas 2 (3/7), or 3 (4/7). Ovary glabrous (3/3). FRUIT Caryopsis with adherent pericarp (7/7); apex unappendaged (1/1). DISTRIBUTION Temperate Asia (11), or Tropical Asia (6).

Distribution Map

 
  • Native distribution
Found in
  • Asia-Temperate China China South-Central
  • Tibet
  • Asia-Tropical Indian Subcontinent Assam
  • East Himalaya
  • Indo-China Laos
  • Myanmar
  • Vietnam

  Bibliography

  • 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
http://www.kew.org/data/grasses-db/
Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora. http://www.kew.org/data/grasses-db.html. [accessed 24 January 2012; 14:30 GMT]
  • A © Copyright The Board of Trustees, Royal Botanic Gardens, Kew.
eMonocot
http://e-monocot.org
eMonocot. (2010, 1st November). Retrieved Wednesday, 8th February, 2012, from http://e-monocot.org.
  • B Content licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
World Checklist of Selected Plant Families
http://apps.kew.org/wcsp/
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
  • C See http://kew.org/about-kew/website-information/legal-notices/index.htm You may use data on these Terms and Conditions and on further condition that: The data is not used for commercial purposes; You may copy and retain data solely for scholarly, educational or research purposes; You may not publish our data, except for small extracts provided for illustrative purposes and duly acknowledged; You acknowledge the source of the data by the words "With the permission of the Trustees of the Royal Botanic Gardens, Kew" in a position which is reasonably prominent in view of your use of the data; Any other use of data or any other content from this website may only be made with our prior written agreement.