Urelytrum Hack.
  • H.G.A.Engler & K.A.E.Prantl, Nat. Pflanzenfam. 2(2): 22, 25 (1887) 


General Description

HABIT Annual (1), or perennial (6). Culms erect; robust (1/1); 50-145.7-400 cm long. Leaf-sheath auricles absent (5), or erect (3). Ligule an eciliate membrane (6), or a ciliolate membrane (1). Leaf-blades stiff (2), or firm (5). INFLORESCENCE Inflorescence composed of racemes. Racemes single (4), or paired (3), or digitate (3), or borne along a central axis (1). Rhachis fragile at the nodes; semiterete. Rhachis internodes linear (1), or oblong (3), or cuneate (3). Rhachis internode tip oblique; crateriform. Raceme-bases brief (3), or linear (4). Spikelets sunken (1/1); in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels linear (1), or oblong (3), or cuneate (3); tip cupuliform. STERILE SPIKELETS Companion sterile spikelets rudimentary (3), or well-developed (5); persistent. Companion sterile spikelet glumes muticous (2), or awned. FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate (3), or elliptic (1), or oblong (5); dorsally compressed; 5-7.871-11 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus brief (1), or square (1), or oblong (5); pubescent; base truncate (1), or obtuse (6); inserted. GLUMES Glumes exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate (1), or elliptic (6); coriaceous; without keels; 5 -veined (3/3). Lower glume surface convex, or flat (2); smooth (4), or spinose (4), or muricate (2); glabrous, or pubescent (2). Lower glume apex entire, or dentate (1); 2 -fid (1/1); acute. Upper glume ovate; membranous (1), or chartaceous (4), or scarious (1), or coriaceous (1); 1-keeled; 3 -veined. Upper glume primary vein eciliate (5), or ciliolate (1), or ciliate (1). Upper glume apex acute (1/1). FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret linear (1), or lanceolate (2), or oblong (4), or ovate (1); hyaline; 2 -veined; obtuse (1/1). Fertile lemma lanceolate (4), or oblong (3), or ovate (3); hyaline; without keel; 3 -veined. Lemma margins eciliate (4), or ciliolate (3). Lemma apex obtuse (1), or acute (6). Palea hyaline; 2 -veined (1/1). FLOWER Anthers 3 (3/3). DISTRIBUTION Africa.

  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.