Pseudosorghum A.Camus
  • Bull. Mus. Natl. Hist. Nat. 26: 662 (1921) 


General Description

HABIT Annual. Culms decumbent; 40-85-150 cm long; rooting from lower nodes (1/1). Ligule an eciliate membrane (1), or a ciliolate membrane (1). INFLORESCENCE Inflorescence a panicle with branches tipped by a raceme. Panicle open. Racemes bearing few fertile spikelets (1), or many spikelets (1); 3-6 fertile spikelets on each (1), or 10-14 fertile spikelets on each (1). Rhachis fragile at the nodes. Rhachis internodes filiform. Rhachis internode tip transverse. Spikelets in pairs. Fertile spikelets sessile; 1 in the cluster. Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels filiform; tip rectangular. STERILE SPIKELETS Companion sterile spikelets well-developed; separately deciduous. FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 4-4.5-5 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus pilose; base obtuse; attached transversely. GLUMES Glumes reaching apex of florets (1), or exceeding apex of florets (1); firmer than fertile lemma. Lower glume lanceolate; cartilaginous; without keels; 7-9 -veined. Lower glume surface convex (1), or flat (1). Lower glume apex truncate. Upper glume elliptic; cartilaginous; without keels; 5 -veined, or 6-7 -veined (1). Upper glume apex acute (1/1). FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret lanceolate; hyaline; 0 -veined (1), or 2 -veined (1); acute (1/1), or acuminate (1/1). Fertile lemma lanceolate (1), or oblong (1); hyaline. Lemma margins eciliate (1), or ciliate (1). Lemma apex lobed; 2 -fid; incised 0.4-0.45-0.5 of lemma length; awned; 1 -awned. Principal lemma awn from a sinus; geniculate. Palea absent or minute. FLOWER Lodicules 2. Anthers 3 (1/1). DISTRIBUTION Temperate Asia (1), or Tropical 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.