Triniochloa Hitchc.
  • Contr. U. S. Natl. Herb. 17: 303 (1913) 


General Description

HABIT Perennial. Rhizomes absent (4), or elongated (2). Culms erect (2/4), or geniculately ascending (1/4), or decumbent (2/4); robust (1/2), or slender (1/2); 30-59.58-135 cm long. Leaf-sheaths tubular for much of their length. Ligule an eciliate membrane. Leaf-blades persistent (5), or deciduous at the ligule (1); filiform (2), or linear (4). INFLORESCENCE Inflorescence a panicle. Panicle open (4), or contracted (2). Primary panicle branches not whorled (5), or whorled at most nodes (1). Spikelets appressed; solitary. Fertile spikelets pedicelled. Pedicels filiform (5/5). FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear (4), or lanceolate (2); subterete (4), or dorsally compressed (2); 9-12.1-18 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus bearded. GLUMES Glumes persistent; shorter than spikelet (2), or reaching apex of florets (4); thinner than fertile lemma. Lower glume lanceolate (4), or ovate (2); 0.66-0.8133-1 length of upper glume; hyaline (4), or membranous (2); without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute (3), or acuminate (3). Upper glume lanceolate (4), or ovate (2); 0.25-0.765-1 length of adjacent fertile lemma; hyaline (4), or membranous (2); with undifferentiated margins (5), or hyaline margins (1); without keels; 1 -veined (3), or 3 -veined (3). Upper glume apex acute (3), or acuminate (3). FLORETS Fertile lemma ovate; subterete (1/1); coriaceous; without keel; 5 -veined (2), or 7 -veined (4), or 8-9 -veined (2). Lemma surface smooth (5), or asperulous (1), or scabrous (2). Lemma margins flat (2), or involute (4); exposing palea (2), or interlocking with palea keels (4). Lemma apex dentate (4), or lobed (2); 2 -fid; incised 0.1-0.175-0.25 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus (1), or dorsal (5); geniculate. Palea 1 length of lemma; membranous (2), or coriaceous (4). Palea keels separated (2), or contiguous above a sulcus (4); smooth (5), or scabrous (1). Palea apex dentate (2/2). FLOWER Lodicules 2; united; fleshy; truncate. Anthers 3. FRUIT Caryopsis with adherent pericarp (1/1). Hilum linear (1/1); 1 length of caryopsis. DISTRIBUTION North America (5), or South America (2).

  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.