Polytrias Hack.
  • H.G.A.Engler & K.A.E.Prantl, Nat. Pflanzenfam. 2(2): 24 (1889) 


General Description

HABIT Perennial. Culms prostrate; 10-30 cm long; rooting from lower nodes. Ligule a ciliolate membrane. Leaf-blades lanceolate. INFLORESCENCE Inflorescence composed of racemes. Racemes single. Rhachis fragile at the nodes; flattened. Rhachis internodes linear. Spikelets in threes. Fertile spikelets sessile and pedicelled; 3 in the cluster. Pedicels linear. FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; 4-5 mm long; falling entire; deciduous from the base, or with accessory branch structures. Spikelet callus base truncate; attached transversely. GLUMES Glumes reaching apex of florets; firmer than fertile lemma. Lower glume oblong; cartilaginous; 2-keeled; 6 -veined. Lower glume intercarinal veins distinct. Lower glume surface pilose. Lower glume apex truncate. Upper glume oblong; without keels; 3 -veined. Upper glume surface pilose. Upper glume apex truncate. FLORETS Fertile lemma oblong; hyaline; firmer above; without keel; 1 -veined. Lemma apex dentate; 2-3 -fid; incised 0.3 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; geniculate. Palea absent or minute. DISTRIBUTION Africa, or Temperate Asia, or Tropical Asia, or Australasia, or Pacific, or South America.

  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.