Tithonia

Tithonia
Tithonia diversifolia
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Tribe: Heliantheae
Subtribe: Helianthinae
Genus: Tithonia
Desf. ex Juss. 1789 not Kuntze 1891 (Phytolaccaceae)[1]
Synonyms[2][3]
  • Urbanisol Kuntze
  • Mirasolia (Sch.Bip.) Benth.
  • Tithonia sect. Mirasolia (Sch.Bip.) La Duke
Red Tithonia

Tithonia is a genus of flowering plants in the tribe Heliantheae within the family Asteraceae.[4][5]

Tithonia has a center of distribution in Mexico but with one species extending into the Southwestern United States and several native to 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. T. rotundifolia makes a nice fresh cut flower, flowering in mid- to late-summer in the Northern hemisphere.[6] 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.[7]

  1. ^ "Tropicos, search for "Tithonia"". Tropicos.org. Retrieved 2018-08-31.
  2. ^ Cite error: The named reference f was invoked but never defined (see the help page).
  3. ^ "Tithonia Desf. ex Juss". Germplasm Resources Information Network. United States Department of Agriculture. 1996-09-17. Retrieved 2010-06-06.
  4. ^ Jussieu, Antoine Laurent de. 1789. Genera Plantarum 189 in Latin
  5. ^ "Tropicos, "Tithonia" Desf. ex Juss". Tropicos.org. Retrieved 2018-08-31.
  6. ^ "Growing Tithonia (Mexican Sunflower) from Seed | Johnny's Selected Seeds". www.johnnyseeds.com. Retrieved 2020-08-31.
  7. ^ "Flora of North America, Vol. 21 Page 138, Sunflowerweed, "Tithonia" Desfontaines ex Jussieu, Gen. Pl. 189. 1789". Efloras.org. Retrieved 2018-08-31.