Trachypogon Nees
  • C.F.P.von Martius, Fl. Bras. Enum. Pl. 2: 341 (1829) 


General Description

HABIT Perennial. Culms erect (1/1); 30-81.25-200 cm long; firm (3), or wiry (1). Leaf-sheath auricles absent, or erect (1). Ligule an eciliate membrane. Leaf-blades filiform (2), or linear (3). INFLORESCENCE Inflorescence composed of racemes. Racemes single, or paired (2), or digitate (2). Rhachis subterete. Rhachis internodes linear. Rhachis internode tip oblique; flat. Spikelets in pairs. Fertile spikelets pedicelled; 1 in the cluster, or 2 in the cluster (1). Companion sterile spikelets pedicelled; 0 in the cluster (1), or 1 in the cluster. Pedicels linear; tip oblique. STERILE SPIKELETS Companion sterile spikelets well-developed; persistent. FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 6-8.375-13 mm long; falling entire; deciduous from the base, or with accessory branch structures (1). Spikelet callus linear; bearded; base pungent; attached obliquely. GLUMES Glumes firmer than fertile lemma. Lower glume oblong; coriaceous; without keels; 1 -veined (1/3), or 7-9 -veined (2/3). Lower glume lateral veins absent (1), or distinct (3). Lower glume surface convex (3), or grooved on either side of midvein (1); glabrous (3), or pubescent (2), or pilose (1), or villous (1). FLORETS Basal sterile florets male (1), or barren (3); with palea (1), or without significant palea (3). Lemma of lower sterile floret oblong; hyaline; 2 -veined (3/3); obtuse (3/3). Fertile lemma linear; hyaline; without keel; 3 -veined (3/3). Lemma apex acute; awned; 1 -awned. Principal lemma awn geniculate; limb glabrous (3), or puberulous (1). Column of lemma awn pubescent (1), or hirsute (1), or plumose (2). Palea absent or minute. FLOWER Anthers 3 (1/1). DISTRIBUTION Africa (2), or North America (1), or South America (3).

  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.