Heteropogon

Heteropogon is a genus of annual and perennial plants in the grass family known generally as tangleheads, widespread primarily in tropical and subtropical regions.[5]

tangleheads
Heteropogon contortus
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Monocots
(unranked):	Commelinids
Order:	Poales
Family:	Poaceae
Subfamily:	Panicoideae
Tribe:	Andropogoneae
Genus:	Heteropogon Pers.[1]
Type species
Heteropogon glaber (syn of H. contortus) Pers.[2][3]
Synonyms[1][4]
Spirotheros Raf.

Tangleheads are erect tussock grasses with paired spikelets. Lower pairs are equal in size (homogamous units), and upper pairs include one awned bisexual spikelet and one awnless sterile spikelet (heterogamous units).[6][7][8]

The name of the genus is derived from the Greek words έτερος (éteros), meaning "different," and πώγων (pogon), meaning "beard."[9]

Species[4][10][11]

• Heteropogon contortus (L.) P.Beauv. ex Roem. & Schult. - Africa, southern Asia, southwestern Europe (Spain, France, Italy, Switzerland, Balkans), Mesoamerica, West Indies, tropical South America, southern United States (CA AZ NM TX FL HI), various oceanic islands
• Heteropogon fischerianus Bor - Tamil Nadu
• Heteropogon melanocarpus (Elliott) Benth. - Mesoamerica, West Indies, tropical South America, southern United States (AZ TX AL FL GA NC SC), Africa, Madagascar, Yunnan, India, Oman
• Heteropogon polystachyus (Roxb.) Schult. - Tamil Nadu
• Heteropogon ritchiei (Hook.f.) Blatt. & McCann - India, Myanmar
• Heteropogon triticeus (R.Br.) Stapf ex Craib - Southeast Asia, New Guinea, Queensland, Hainan, India, Sri Lanka

Formerly included[4]

see Agenium Dichanthium Diectomis Diheteropogon Elymandra Hyparrhenia Parahyparrhenia Trachypogon

• Heteropogon androphilus - Elymandra androphila
• Heteropogon arrhenobasis - Hyparrhenia arrhenobasis
• Heteropogon bellariensis - Parahyparrhenia bellariensis
• Heteropogon buchneri - Diheteropogon filifolius
• Heteropogon concinnus - Dichanthium caricosum
• Heteropogon filifolius - Diheteropogon filifolius
• Heteropogon grandiflorus - Diheteropogon filifolius
• Heteropogon hagerupii - Diheteropogon hagerupii
• Heteropogon hirtus - Hyparrhenia hirta
• Heteropogon hochstetteri - Diectomis fastigiata
• Heteropogon leptocladus - Agenium leptocladum
• Heteropogon megapotamicus - Trachypogon spicatus
• Heteropogon oliganthus - Dichanthium oliganthum
• Heteropogon pubescens - Hyparrhenia hirta
• Heteropogon secundus - Trachypogon spicatus
• Heteropogon stipoides - Trachypogon spicatus
• Heteropogon tenellus - Dichanthium caricosum
• Heteropogon tenuiculus - Dichanthium sericeum
• Heteropogon truncatus - Trachypogon spicatus
• Heteropogon villosus - Agenium villosum

Gallery

• 
  Heteropogon sp.
• 
  Heteropogon contortus
• 
  Heteropogon contortus
• 
  Heteropogon triticeus

References

1. "Genus: Heteropogon Pers". Germplasm Resources Information Network. United States Department of Agriculture. 1999-03-09. Retrieved 2011-02-24.
2. lectotype designated by Nash, North American Flora 17: 127 (1912)
3. Tropicos, Heteropogon Pers.
4. Kew World Checklist of Selected Plant Families
5. Persoon, Christiaan Hendrik 1807. Synopsis Plantarum 2: 533 in Latin
6. Jepson Manual Treatment
7. USDA Plants Profile
8. Grass Manual Treatment Archived 2011-06-11 at the Wayback Machine
9. Quattrocchi, Umberto (2006). CRC World Dictionary of Grasses. II E-O. CRC Press. p. 1036. ISBN 978-0-8493-1303-5.
10. The Plant List search for Heteropogon
11. "GRIN Species Records of Heteropogon". Germplasm Resources Information Network. United States Department of Agriculture. Archived from the original on 2009-05-08. Retrieved 2011-02-24.

External links