Sphenopus Trin.
  • Fund. Agrost.: 135 (1820) 


General Description

HABIT Annual. Culms erect (1), or geniculately ascending (1), or decumbent; 5-18.75-30 cm long. Ligule an eciliate membrane. Leaf-blades filiform. INFLORESCENCE Inflorescence a panicle. Panicle open, or contracted (1). Spikelets solitary. Fertile spikelets pedicelled. Pedicels cuneate. FERTILE SPIKELETS Spikelets comprising 2-5 fertile florets, or 6 fertile florets (1); with diminished florets at the apex. Spikelets elliptic (1), or cuneate (1); laterally compressed; 2-3.5-5 mm long; breaking up at maturity; disarticulating below each fertile floret. GLUMES Glumes persistent; shorter than spikelet; thinner than fertile lemma. Lower glume orbicular; 0.2-0.325-0.5 length of upper glume; hyaline; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume oblong; 0.25-0.375-0.5 length of adjacent fertile lemma; hyaline; without keels (1), or 1-keeled (1); 0-1 -veined. Upper glume apex emarginate (1), or obtuse (1), or acute (1). FLORETS Fertile lemma elliptic (1), or ovate (1); membranous; keeled; 3 -veined (1), or 5 -veined (1). Lemma midvein without distinctive roughness (1), or scabrous (1). Lemma lateral veins with distinct primaries but obscure intermediates (1/1). Lemma apex truncate (1), or obtuse; muticous (1), or mucronate (1). Palea keels smooth (1), or scabrous (1); eciliate (1), or ciliolate (1). Apical sterile florets resembling fertile though underdeveloped. FLOWER Anthers 3. Ovary glabrous. FRUIT Caryopsis with adherent pericarp; linear (1), or oblong (1). Embryo 0.2-0.225-0.25 length of caryopsis. Hilum punctiform. DISTRIBUTION Europe (1), or Africa, or Temperate Asia (1), or Australasia (1).

  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.