Ventenata Koeler
  • Descr. Gramin.: 272 (1802) 


Notes: , nom. cons.

General Description

HABIT Annual. Culms erect (5/5), or geniculately ascending (2/5); slender (2/2); 7-23.03-55 cm long. Ligule an eciliate membrane. INFLORESCENCE Inflorescence a panicle (6), or composed of racemes (2); exserted (7), or embraced at base by subtending leaf (1). Panicle open (6/6). Racemes linear (2/2), or lanceolate (2/2); paucilateral (2/2). Spikelets solitary. Fertile spikelets pedicelled. Pedicels cuneate. FERTILE SPIKELETS Spikelets comprising 2 fertile florets (2), or 3 fertile florets (5), or 4 fertile florets (4), or 5-7 fertile florets (2), or 8 fertile florets (1); with a barren rhachilla extension (2), or with diminished florets at the apex (6). Spikelets lanceolate (2), or oblong (5), or cuneate (1); laterally compressed; 4.5-10.5-19 mm long; breaking up at maturity; disarticulating between fertile florets but the lowest falling with glumes attached. Rhachilla internodes glabrous (7), or pubescent (1). Floret callus evident; pubescent (5/5). GLUMES Glumes deciduous with pedicel attached; shorter than spikelet (7), or reaching apex of florets (1); thinner than fertile lemma. Lower glume lanceolate (7), or elliptic (1); 0.5-0.6475-0.9 length of upper glume; membranous; 1-keeled; 1 -veined (1), or 3 -veined (6), or 7 -veined (1). Lower glume lateral veins absent (1), or distinct (7); without ribs (6/7), or ribbed (1/7). Lower glume apex acute (4), or acuminate (4). Upper glume lanceolate (7), or elliptic (1); 0.7-1.037-1.8 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined (4), or 4 -veined (1), or 5 -veined (4), or 6-7 -veined (1), or 9 -veined (1). Upper glume lateral veins without ribs (7), or ribbed (1). Upper glume apex acute (4), or acuminate (4). FLORETS Fertile lemma lanceolate (2), or elliptic (2), or oblong (4); chartaceous (7), or coriaceous (1); without keel; 5 -veined. Lemma surface smooth (7), or scaberulous (1); glabrous (5), or puberulous (1), or pubescent (2). Lemma apex entire (2), or dentate (4), or lobed (2); 2 -fid (6/6); incised 0.1 of lemma length; acute (3/3); muticous (1), or awned (7); 1 -awned (3/7), or 3 -awned (4/7). Principal lemma awn dorsal (7/7); geniculate (7/7). Lateral lemma awns shorter than principal (4/4). Palea 0.6-0.775-0.9 length of lemma. Palea keels smooth (7), or scabrous (1); eciliate (5), or ciliolate (2), or ciliate (1). Apical sterile florets resembling fertile though underdeveloped (6/6). FLOWER Anthers 3. Ovary glabrous. FRUIT Caryopsis with adherent pericarp; ellipsoid (2/2). DISTRIBUTION Europe (2), or Africa (1), or Temperate Asia.

  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.