Heteropogon Pers.
  • Syn. Pl. 2: 533 (1807) 


Notes: Distribution: SC. Europe to Trop. & Subtrop.

General Description

HABIT Annual (2), or perennial (3). Culms erect (3/3); robust (1/1); 30-97-250 cm long; with prop roots (1/1). Culm-nodes constricted (1/1). Lateral branches fastigiate (2/2). Ligule an eciliate membrane (3), or a fringe of hairs (2). Leaf-blades stiff (1), or firm (4). Leaf-blade midrib evident (1/1). Leaf-blade margins cartilaginous (1/1). INFLORESCENCE Synflorescence simple (4), or compound (1); paniculate (1/1). Inflorescence composed of racemes; terminal (4), or terminal and axillary (1); subtended by an unspecialized leaf-sheath (4), or a spatheole (1); exserted (4), or enclosed (1). Spatheole linear (1/1); herbaceous (1/1). Racemes single; erect (4), or ascending (1); unilateral (4/4); bearing 5-10 fertile spikelets on each (1/1). Rhachis fragile at the nodes. Rhachis internodes linear (4), or cuneate (1). Rhachis internode tip oblique. Spikelets appressed; in pairs. Fertile spikelets sessile; 1 in the cluster (4), or 2 in the cluster (1). Companion sterile spikelets pedicelled; 1 in the cluster. Pedicels oblong (4/4). STERILE SPIKELETS Basal sterile spikelets well-developed. Companion sterile spikelets well-developed; separately deciduous. Companion sterile spikelet callus linear. Companion sterile spikelet glumes muticous. FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets linear; subterete; 4.5-9.25-15 mm long; falling entire; deciduous with accessory branch structures. Spikelet callus linear; bearded; base pungent; attached obliquely. GLUMES Glumes exceeding apex of florets; firmer than fertile lemma. Lower glume linear (4), or elliptic (1), or oblong (1); coriaceous; without keels; 7-8 -veined (1/3), or 9 -veined (3/3). Lower glume surface convex (3), or grooved on either side of midvein (2); puberulous (2), or pubescent (4), or pilose (1), or hispidulous (1). Lower glume apex truncate (2), or obtuse (3). Upper glume linear; coriaceous; with undifferentiated margins (4), or membranous margins (1); without keels; wingless (4), or winged on margins (1); 3 -veined (1/1). Upper glume surface glabrous (4), or puberulous (1), or pubescent (1). FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret linear (2), or lanceolate (2), or elliptic (1); 1 length of fertile lemma; hyaline; 0 -veined (4), or 2 -veined (1). Fertile lemma linear, or oblong (1); membranous; 1 -veined (4), or 3 -veined (1). Lemma apex awned; 1 -awned. Principal lemma awn geniculate. Column of lemma awn pubescent (3), or hirtellous (2). Palea present (1), or absent or minute (4); 0.2-0.25-0.3 length of lemma. FLOWER Anthers 3. Stigmas 2. DISTRIBUTION Europe (1), or Africa (2), or Temperate Asia (3), or Tropical Asia, or Australasia (2), or Pacific (1), or North America (2), or South America (2).

Distribution Map

 
  • Native distribution
  • Introduced distribution
Found in
  • Africa East Tropical Africa Kenya
  • Tanzania
  • Uganda
  • Macaronesia Cape Verde
  • Northeast Tropical Africa Chad
  • Djibouti
  • Eritrea
  • Ethiopia
  • Socotra
  • Somalia
  • Northern Africa Algeria
  • Morocco
  • Tunisia
  • South Tropical Africa Angola
  • Malawi
  • Mozambique
  • Zambia
  • Zimbabwe
  • Southern Africa Botswana
  • Cape Provinces
  • Caprivi Strip
  • Free State
  • KwaZulu-Natal
  • Lesotho
  • Namibia
  • Northern Provinces
  • Swaziland
  • West Tropical Africa Benin
  • Burkina
  • Gambia, The
  • Ghana
  • Guinea
  • Guinea-Bissau
  • Ivory Coast
  • Mali
  • Mauritania
  • Niger
  • Nigeria
  • Senegal
  • Sierra Leone
  • Togo
  • West-Central Tropical Africa Burundi
  • Cameroon
  • Central African Republic
  • Gulf of Guinea Is.
  • Rwanda
  • Zaire
  • Western Indian Ocean Madagascar
  • Mauritius
  • Rodrigues
  • Réunion
  • Seychelles
  • Asia-Temperate Arabian Peninsula Oman
  • Saudi Arabia
  • Yemen
  • China China North-Central
  • China South-Central
  • China Southeast
  • Hainan
  • Tibet
  • Eastern Asia Japan
  • Taiwan
  • Western Asia Afghanistan
  • Iran
  • Iraq
  • Lebanon-Syria
  • Asia-Tropical Indian Subcontinent Assam
  • Bangladesh
  • East Himalaya
  • India
  • Laccadive Is.
  • Nepal
  • Pakistan
  • Sri Lanka
  • West Himalaya
  • Indo-China Andaman Is.
  • Laos
  • Myanmar
  • Nicobar Is.
  • South China Sea
  • Thailand
  • Vietnam
  • Malesia Jawa
  • Lesser Sunda Is.
  • Malaya
  • Maluku
  • Philippines
  • Sulawesi
  • Sumatera
  • Papuasia New Guinea
  • Australasia Australia Queensland
  • Europe Middle Europe Switzerland
  • Southeastern Europe Albania
  • Italy
  • Sicilia
  • Yugoslavia
  • Southwestern Europe Baleares
  • France
  • Spain
  • Northern America Mexico Mexican Pacific Is.
  • Mexico Central
  • Mexico Gulf
  • Mexico Northeast
  • Mexico Northwest
  • Mexico Southeast
  • Mexico Southwest
  • South-Central U.S.A. New Mexico
  • Texas
  • Southeastern U.S.A. Alabama
  • Florida
  • Georgia
  • North Carolina
  • South Carolina
  • Southwestern U.S.A. Arizona
  • California
  • Pacific North-Central Pacific Hawaii
  • Northwestern Pacific Marianas
  • South-Central Pacific Marquesas
  • Society Is.
  • Southwestern Pacific Fiji
  • New Caledonia
  • Samoa
  • Tonga
  • Southern America Brazil Brazil North
  • Brazil West-Central
  • Caribbean Cuba
  • Dominican Republic
  • Haiti
  • Jamaica
  • Leeward Is.
  • Netherlands Antilles
  • Puerto Rico
  • Windward Is.
  • Central America Belize
  • El Salvador
  • Guatemala
  • Honduras
  • Nicaragua
  • Northern South America French Guiana
  • Guyana
  • Venezuela
  • Southern South America Argentina Northeast
  • Argentina Northwest
  • Paraguay
  • Western South America Bolivia
  • Colombia
  • Ecuador
  • Peru
Introduced into
  • Africa Middle Atlantic Ocean Ascension
  • Asia-Temperate Eastern Asia Nansei-shoto

  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.