Tithonia

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Tithonia
Tithonia diversifolia.JPG
Tithonia diversifolia
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Tribe: Heliantheae
Genus: Tithonia
Desf. ex Juss.
Species

See text

Synonyms

Mirasolia (Sch.Bip.) Benth.[1]

Tithonia is a genus of flowering plants in the family Asteraceae. It includes 11 species, with a center of distribution in Mexico but with one species extending into the Southwestern United States and several extending into Central America. Two species, T. diversifolia and T. rotundifolia, are widely cultivated and have escaped to become weeds in tropical and subtropical areas around the world. The distinguishing feature of the genus is the peduncle, which is fistulose (meaning hollow and flaring toward the apex). The plants are coarse annual or perennial herbs or shrubs, and one species, T. koelzii, is a small tree.

Species[edit]

Formerly placed here[edit]

Mexican Sunflower Tithonia rotundifolia

References[edit]

  1. ^ "Tithonia Desf. ex Juss.". Germplasm Resources Information Network. United States Department of Agriculture. 1996-09-17. Retrieved 2010-06-06. 
  2. ^ "Tithonia". Integrated Taxonomic Information System. Retrieved 6 June 2010. 
  3. ^ a b "Species Records of Tithonia". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-06-06. 
  • La Duke, J. C. 1982. Revision of Tithonia. Rhodora 84: 453-522.

External links[edit]

Media related to Tithonia at Wikimedia Commons Data related to Tithonia at Wikispecies