Pseudechinolaena Stapf
  • D.Oliver & auct. suc. (eds.), Fl. Trop. Afr. 9: 494 (1919) 


General Description

HABIT Annual. Culms decumbent (1), or prostrate (5); 10-23.33-50 cm long; rooting from lower nodes (4/5), or with aerial roots from the nodes (1/5). Ligule an eciliate membrane (4), or a ciliolate membrane (3). Leaf-blades linear (1), or lanceolate (3), or elliptic (2), or oblong (1), or ovate (1). Leaf-blade venation without cross veins (5), or with obscure cross veins (1). Leaf-blade margins cartilaginous (1/1). INFLORESCENCE Inflorescence composed of racemes; exserted (5), or embraced at base by subtending leaf (1). Racemes borne along a central axis; ascending (5), or spreading (1); unilateral. Rhachis angular (5), or subterete (1). Spikelet packing crowded (1), or contiguous (3), or distant (2). Spikelets solitary (1), or in pairs. Fertile spikelets sessile and pedicelled (5), or pedicelled (2); 1 in the cluster (1/5), or 2 in the cluster (4/5); the lower smaller (5/5). Companion sterile spikelets sessile (1/1); 1 in the cluster (1/1). Pedicels oblong (1/1). STERILE SPIKELETS Basal sterile spikelets absent, or rudimentary (1). Companion sterile spikelets absent (5), or rudimentary (1). FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; gibbous; 1.5-2.566-5.7 mm long; falling entire. GLUMES Glumes shorter than spikelet (3), or reaching apex of florets (2), or exceeding apex of florets (1); thinner than fertile lemma. Lower glume lanceolate (1), or elliptic (3), or oblong (2), or ovate (1); herbaceous; without keels; 3 -veined. Lower glume surface smooth (5), or asperulous (2). Lower glume apex obtuse (1), or acute (5), or acuminate (1); muticous (3), or mucronate (2), or awned (1). Upper glume ovate; gibbous; herbaceous; without keels (3), or 1-keeled (3); wingless (4), or winged on keel (2), or winged on margins (2); 5 -veined (5), or 7 -veined (1). Upper glume surface smooth (5), or tuberculate (1); glabrous (2), or pubescent (2), or setose (4); with tubercle-based hairs (2), or hooked hairs (4). Upper glume apex obtuse (1), or acute (5), or acuminate (1), or caudate (1). FLORETS Basal sterile florets male (4), or barren (5); with palea. Lemma of lower sterile floret lanceolate (1), or oblong (1), or ovate (4); chartaceous (4), or coriaceous (2); 3 -veined (4/5), or 5 -veined (1/5); truncate (1), or obtuse (5). Fertile lemma elliptic (3), or oblong (1), or ovate (2); laterally compressed; gibbous; coriaceous; without keel; 3 -veined (2/3), or 4 -veined (1/3), or 5 -veined (2/3). Lemma margins flat (4), or convolute (2). Lemma apex emarginate (1), or obtuse (1), or acute (4). Palea not rolled (1), or involute (5); coriaceous; without keels. FLOWER Anthers 3 (5/5). FRUIT Caryopsis with adherent pericarp (1/1); lanceolate (1/2), or ovoid (1/2). DISTRIBUTION Africa, or Temperate Asia (1), or Tropical Asia (1), or North America (1), or South America (1).

  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.