Orthoclada P.Beauv.
  • Ess. Agrostogr.: 69 (1812) 

Notes: Distribution: Tanzania to Zambia, S. Mexico to Trop. America

General Description

HABIT Perennial. Rhizomes absent (1), or elongated (1). Culms erect (1/1), or decumbent (1/1); 50-107.5-180 cm long; rooting from lower nodes (1/1). Ligule a ciliolate membrane. Leaf-blade base with a false petiole. Leaf-blades lanceolate, or oblong. Leaf-blade venation with distinct cross veins. INFLORESCENCE Inflorescence a panicle. Panicle open. Primary panicle branches not whorled (1), or whorled at most nodes (1). Spikelets solitary. Fertile spikelets pedicelled. Pedicels filiform. FERTILE SPIKELETS Spikelets comprising 1 fertile florets (1), or 2 fertile florets, or 3-4 fertile florets (1); with diminished florets at the apex. Spikelets lanceolate (1), or oblong (1); laterally compressed; 8-9.5-12 mm long; falling entire. GLUMES Glumes shorter than spikelet. Lower glume lanceolate; 1 length of upper glume; herbaceous; 1-keeled; 3 -veined. Lower glume surface asperulous. Lower glume apex acute. Upper glume ovate; 0.8 length of adjacent fertile lemma; herbaceous; 1-keeled; 5 -veined. Upper glume surface asperulous. Upper glume apex acute. FLORETS Fertile lemma elliptic (1), or ovate (1); herbaceous; keeled; 5-7 -veined. Lemma midvein scaberulous. Lemma apex obtuse (1), or acuminate (1). Palea 1 length of lemma; 2 -veined. Palea keels scaberulous. Apical sterile florets 1 in number; barren; linear. FLOWER Lodicules 2. Anthers 2-3 (1). FRUIT Caryopsis with adherent pericarp. Embryo 0.25 length of caryopsis. Hilum punctiform. DISTRIBUTION Africa (1), or South America (1).

Distribution Map

  • Native distribution
Found in
  • Africa East Tropical Africa Tanzania
  • South Tropical Africa Zambia
  • West-Central Tropical Africa Zaire
  • Northern America Mexico Mexico Gulf
  • Mexico Southeast
  • Mexico Southwest
  • Southern America Brazil Brazil North
  • Brazil Northeast
  • Brazil South
  • Brazil West-Central
  • Caribbean Leeward Is.
  • Trinidad-Tobago
  • Windward Is.
  • Central America Costa Rica
  • Guatemala
  • Honduras
  • Nicaragua
  • Panamá
  • Northern South America French Guiana
  • Guyana
  • Suriname
  • Venezuela
  • Western South America Bolivia
  • Colombia
  • Ecuador
  • Peru


  • 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
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. (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
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.