Perotis Aiton
  • Hort. Kew. 1: 85 (1789) 


Notes: Distribution: Trop. & S. Africa, W. Indian Ocean, Trop. & Subtrop. Asia to Australia

General Description

HABIT Annual (13), or perennial (2). Rhizomes absent (13), or elongated (1). Culms erect (4/13), or geniculately ascending (8/13), or decumbent (5/13); 5-35.78-90 cm long; firm (12), or wiry (2). Ligule an eciliate membrane (12), or a fringe of hairs (2). Leaf-blades linear (3), or lanceolate, or ovate (4); stiff (1), or firm (13). Leaf-blade apex muticous (13), or pungent (1). INFLORESCENCE Inflorescence composed of racemes; exserted (11), or embraced at base by subtending leaf (3). Racemes single; multilateral. Rhachis angular (1/1). Spikelet packing crowded (8), or contiguous (7), or lax (2), or distant (1). Spikelets appressed (1), or ascending (9), or spreading (9), or deflexed (1); solitary. Fertile spikelets sessile (5), or pedicelled (9). Pedicels oblong (7/7). FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets linear, or lanceolate (13); subterete; 1.2-4.282-11 mm long; falling entire. Spikelet callus brief (1), or square (1), or oblong (4), or linear (8); pubescent (3/3); base obtuse (2/4), or acute (1/4), or pungent (1/4). GLUMES Glumes exceeding apex of florets; firmer than fertile lemma. Lower glume linear (2), or lanceolate (12); 1 length of upper glume; membranous (13/13); without keels (13/13); 1 -veined. Lower glume lateral veins absent. Lower glume surface smooth (11), or asperulous (1), or scabrous (2); glabrous (6), or puberulous (2), or pilose (2), or hispidulous (6). Lower glume apex obtuse (1/13), or acuminate (12/13); awned. Upper glume linear (2), or lanceolate (12); 1.5-2.386-3.5 length of adjacent fertile lemma; membranous (13/13); without keels (13/13); 1 -veined. Upper glume surface smooth (11), or asperulous (1), or scabrous (2); glabrous (6), or puberulous (2), or pilose (2), or hispidulous (6). Upper glume apex acuminate (13/13); awned; 1 -awned. FLORETS Fertile lemma lanceolate; hyaline (13), or membranous (1); without keel; 1 -veined. Lemma apex obtuse (2), or acute (12). Palea hyaline (12), or membranous (2); 0 -veined (3/3); without keels (3), or 2-keeled (11). FLOWER Anthers 3 (13/13). FRUIT Caryopsis with adherent pericarp (13/13); linear (1/10), or fusiform (9/10); isodiametric (3/11), or laterally compressed (1/11), or dorsally compressed (3/11), or flattened (4/11); biconvex (1/1). Embryo 0.3 length of caryopsis. DISTRIBUTION Africa (11), or Temperate Asia (3), or Tropical Asia (3), or Australasia (3).

Distribution Map

 
  • Native distribution
  • Introduced distribution
Found in
  • Africa East Tropical Africa Kenya
  • Tanzania
  • Uganda
  • Northeast Tropical Africa Chad
  • Eritrea
  • Ethiopia
  • Somalia
  • South Tropical Africa Angola
  • Malawi
  • Mozambique
  • Zambia
  • Zimbabwe
  • Southern Africa Botswana
  • Caprivi Strip
  • Free State
  • KwaZulu-Natal
  • Namibia
  • Northern Provinces
  • Swaziland
  • West Tropical Africa Benin
  • Burkina
  • Gambia, The
  • Ghana
  • Guinea
  • Ivory Coast
  • Liberia
  • Mauritania
  • Nigeria
  • Senegal
  • Sierra Leone
  • Togo
  • West-Central Tropical Africa Burundi
  • Cameroon
  • Central African Republic
  • Congo
  • Gabon
  • Rwanda
  • Zaire
  • Western Indian Ocean Madagascar
  • Réunion
  • Seychelles
  • Asia-Temperate China China North-Central
  • China South-Central
  • China Southeast
  • Hainan
  • Eastern Asia Taiwan
  • Asia-Tropical Indian Subcontinent Bangladesh
  • East Himalaya
  • India
  • Nepal
  • Pakistan
  • Sri Lanka
  • West Himalaya
  • Indo-China Cambodia
  • Laos
  • Myanmar
  • South China Sea
  • Thailand
  • Vietnam
  • Malesia Borneo
  • Jawa
  • Lesser Sunda Is.
  • Malaya
  • Maluku
  • Philippines
  • Sulawesi
  • Sumatera
  • Papuasia New Guinea
  • Australasia Australia New South Wales
  • Northern Territory
  • Queensland
  • South Australia
  • Western Australia
Introduced into
  • Africa West Tropical Africa Guinea-Bissau

  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.