Metcalfia Conert
  • Willdenowia 2: 417 (1960) 


Notes: Distribution: Mexico

General Description

HABIT Perennial. Culms erect, or geniculately ascending (1); 10-37.5-90 cm long. Ligule an eciliate membrane. Leaf-blades filiform (3), or linear (1). Leaf-blade apex muticous (3), or pungent (1). INFLORESCENCE Inflorescence a panicle (3), or composed of racemes (2), or comprising only a few spikelets (1). Panicle contracted (3/3). Racemes single (2/2); paucilateral (2/2); bearing 3-4 fertile spikelets on each (1/1). Spikelets solitary (3), or in pairs (1). Fertile spikelets pedicelled; 2 in the cluster (1/1). Pedicels oblong (1/1). FERTILE SPIKELETS Spikelets comprising 3 fertile florets (1), or 4 fertile florets (2), or 5-7 fertile florets (3), or 8-9 fertile florets (2); with diminished florets at the apex. Spikelets lanceolate (1), or oblong (3); laterally compressed; 12-16-25 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes glabrous (2), or pilose (2). Floret callus brief (1), or evident (3); pilose (3/3). GLUMES Glumes persistent; shorter than spikelet (1), or reaching apex of florets (3). Lower glume lanceolate; 0.8-0.925-1 length of upper glume; membranous; without keels (1/3), or 1-keeled (2/3); 1-3 -veined (1), or 5-6 -veined (2), or 7 -veined (3), or 8-9 -veined (1). Lower glume lateral veins absent (1), or distinct. Lower glume surface smooth (3), or asperulous (1). Lower glume apex acute (1), or attenuate (3); muticous (3), or awned (1). Upper glume lanceolate; 1.1-1.3-1.5 length of adjacent fertile lemma; membranous; without keels (1/3), or 1-keeled (2/3); 5-6 -veined (3), or 7 -veined, or 8-9 -veined (1). Upper glume surface smooth (3), or asperulous (1). Upper glume apex attenuate (2/2); muticous (3), or awned (1); 1 -awned (1/1). FLORETS Fertile lemma lanceolate (3), or ovate (1); membranous (1), or cartilaginous (3); without keel; 7 -veined. Lemma surface smooth (3), or scaberulous (1); glabrous (1), or pubescent (2), or pilose (2). Lemma apex dentate (1), or lobed (3); 2 -fid; incised 0.05-0.1833-0.25 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; geniculate. Palea 0.75 length of lemma. Palea keels wingless (3), or winged (1); smooth (1), or scaberulous (3). Palea apex dentate (1/1). Apical sterile florets resembling fertile though underdeveloped. FLOWER Lodicules 3 (3/3); glabrous (3/3), or ciliate (1/3). Anthers 2 (1), or 3 (3). Stigmas 2 (2/2), or 3 (1/2). Ovary pubescent on apex (1/3), or pubescent all over (2/3). FRUIT Hilum linear (2/2); 0.33 length of caryopsis. DISTRIBUTION Europe (2), or Temperate Asia (2), or North America (1).

Distribution Map

 
  • Native distribution
Found in
  • Northern America Mexico Mexico Central
  • Mexico Northeast
  • Mexico Southwest

  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.