Dignathia Stapf
  • Hooker's Icon. Pl. 30: t. 2950 (1911) 


Notes: Distribution: Ethiopia to Mozambique, S. Arabian Pen., NW. India

General Description

HABIT Annual (3), or perennial (2). Culms erect (3), or geniculately ascending (2), or decumbent (2); slender (1/1); 5-25.2-60 cm long; firm (1), or wiry (2), or woody (2). Lateral branches lacking (1/3), or sparse (1/3), or ample (1/3), or suffrutescent (1/3). Ligule a ciliate membrane. Leaf-blades persistent (3), or deciduous at the ligule (2); stiff (2), or firm (3). INFLORESCENCE Inflorescence composed of racemes; subtended by an unspecialized leaf-sheath (4), or an inflated leaf-sheath (1); exserted (4), or embraced at base by subtending leaf (2). Racemes borne along a central axis; in a multilateral false spike; ascending (3), or spreading (2); linear (1), or oblong (4); unilateral; bearing few fertile spikelets; bearing 1 fertile spikelets on each (4), or 2 fertile spikelets on each (3), or 3 fertile spikelets on each (1). Rhachis deciduous from axis; flattened; terminating in a spikelet (1), or sterile spikelet (4). Raceme-bases brief (3), or cuneate (2). Spikelets solitary (3), or in pairs (4), or in threes (1). Fertile spikelets sessile; 1-2 in the cluster (2/2); subequal (2/2). FERTILE SPIKELETS Spikelets comprising 1 fertile florets (4), or 3 fertile florets (1); without rhachilla extension. Spikelets lanceolate (1), or ovate (2), or orbicular (2); laterally compressed; symmetrical (2), or gibbous (3); 2-5-7 mm long; falling entire; deciduous with accessory branch structures. GLUMES Glumes exceeding apex of florets (4/4); firmer than fertile lemma; parallel to lemmas (2), or recurved at apex (2), or gaping (1). Lower glume subulate (1), or lanceolate (4); gibbous; 0.7-0.9375-1 length of upper glume; cartilaginous (1), or coriaceous (4); 1-keeled (4/4); 1 -veined (4/4). Lower glume lateral veins absent (4), or distinct (1). Lower glume surface smooth (3), or scabrous (2); glabrous (2), or puberulous (1), or pubescent (1), or villous (1). Lower glume apex acute (2/4), or acuminate (1/4), or caudate (1/4); muticous (3/4), or awned (1/4). Upper glume lanceolate (2/4), or orbicular (2/4); gibbous; 1-1.187-1.7 length of adjacent fertile lemma; cartilaginous (1), or indurate (4); with undifferentiated margins (1), or hyaline margins (4); 1-keeled (4/4). Upper glume primary vein eciliate (3), or ciliolate (1), or ciliate (1). Upper glume surface smooth (3), or scabrous (2); glabrous (2), or puberulous (1), or pubescent (1), or villous (1); with simple hairs (2/3), or tubercle-based hairs (1/3). Upper glume apex acuminate (1/4), or caudate (3/4); muticous (3/4), or awned (1/4); 1 -awned (1/1). FLORETS Fertile lemma elliptic (1), or ovate; not gibbous (3), or gibbous (2); membranous (3), or cartilaginous (2); keeled; 3 -veined (4/4). Lemma midvein eciliate (1), or ciliolate (1), or ciliate (2), or pubescent (1). Lemma surface glabrous (4), or puberulous (1), or pubescent (1). Lemma apex acute (3), or acuminate (2); mucronate (3), or awned (2); 1 -awned (2/2). Palea 2 -veined (4/4). FLOWER Anthers 3. FRUIT Caryopsis with adherent pericarp; ellipsoid (3/3); dorsally compressed (3/3); plano-convex (3/3). DISTRIBUTION Africa, or Temperate Asia (1), or Tropical Asia (1).

Distribution Map

 
  • Native distribution
Found in
  • Africa East Tropical Africa Kenya
  • Tanzania
  • Northeast Tropical Africa Ethiopia
  • Somalia
  • South Tropical Africa Mozambique
  • Asia-Temperate Arabian Peninsula Oman
  • Yemen
  • Asia-Tropical Indian Subcontinent India

  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.