Pogonarthria Stapf
  • W.H.Harvey & auct. suc. (eds.), Fl. Cap. 7: 316 (1898) 


General Description

HABIT Annual (2), or perennial (2). Culms erect (2), or geniculately ascending (1), or decumbent (1); robust (1/1); 13-51.25-150 cm long. Ligule a fringe of hairs. INFLORESCENCE Inflorescence composed of racemes. Racemes borne along a central axis; ascending (3), or spreading (3), or deflexed (1); unilateral. Rhachis deciduous from axis; angular. Spikelet packing broadside to rhachis; crowded. Spikelets ascending; solitary. Fertile spikelets sessile (1), or pedicelled (3). Pedicels oblong (2/3), or cuneate (1/3). FERTILE SPIKELETS Spikelets comprising 3 fertile florets (1), or 4 fertile florets (3), or 5 fertile florets, or 6 fertile florets (2), or 7-10 fertile florets (1); with diminished florets at the apex. Spikelets elliptic (2), or cuneate (2); laterally compressed; 3.3-6.137-10 mm long; breaking up at maturity; rhachilla deciduous (3), or rhachilla persistent (1); disarticulating below each fertile floret (2/3), or between fertile florets but the lowest falling with glumes attached (1/3); retaining paleas (1/1). Rhachilla internodes brief up to lowest fertile floret (3), or elongated below proximal fertile floret (1); pubescent. GLUMES Glumes persistent (3), or deciduous with pedicel attached (1); shorter than spikelet. Lower glume lanceolate; 0.5-0.7312-1.1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface smooth (3), or scabrous (1). Lower glume apex acute (1), or acuminate (1), or attenuate (2). Upper glume lanceolate; 0.6-0.8375-1 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume surface smooth (3), or asperulous (1). Upper glume apex acute (1), or acuminate (1), or attenuate (2). FLORETS Fertile lemma lanceolate (2), or ovate (2); membranous; keeled; 3 -veined. Lemma midvein scaberulous. Lemma surface smooth (1), or asperulous (3). Lemma margins eciliate (3), or ciliolate (1). Lemma apex acuminate (2), or attenuate (2); muticous (2), or awned (2); 1 -awned (2/2). Palea 0.9 length of lemma; 2 -veined (2/2). Palea keels smooth (1), or scaberulous (3); eciliate (3), or ciliolate (1). Apical sterile florets resembling fertile though underdeveloped. FLOWER Lodicules 2; fleshy. Anthers 3 (1/1). FRUIT Caryopsis with adherent pericarp; lanceolate (1/2), or ellipsoid (1/2); isodiametric (1/2), or laterally compressed (1/2); trigonous (2/2). Embryo 0.3-0.35-0.4 length of caryopsis. DISTRIBUTION Africa.

  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.