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Mexican Sunflower

Tithonia

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Tithonia

provided by wikipedia EN

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]

Species[2][8][9]
formerly included[2]

see Comaclinium Enceliopsis Lasianthaea Viguiera

Mexican sunflower
Tithonia rotundifolia
Tithonia tubaeformis

References

  1. ^ "Tropicos, search for ''Tithonia''". Tropicos.org. Retrieved 2018-08-31.
  2. ^ a b c Flann, C (ed) 2009+ Global Compositae Checklist Archived 2014-11-06 at archive.today
  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.
  8. ^ "Tithonia". Integrated Taxonomic Information System. Retrieved 6 June 2010.
  9. ^ "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.

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Tithonia: Brief Summary

provided by wikipedia EN

Tithonia is a genus of flowering plants in the tribe Heliantheae within the family Asteraceae.

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. 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 Tithonia brachypappa B.L.Rob. - San Luis Potosí Tithonia calva Sch.Bip. - Durango, Sinaloa Tithonia diversifolia (Hemsl.) A.Gray – tree marigold - Mexico, Central America; naturalized in Asia, Australia, Africa, South America, Florida, Texas, various oceanic islands Tithonia fruticosa Canby & Rose - Chihuahua, Durango, Sonora, Sinaloa Tithonia helianthoides Bernh. Tithonia hondurensis La Duke - Belize, Honduras Tithonia koelzii McVaugh - Jalisco Tithonia longiradiata (Bertol.) S.F.Blake - Mexico, Central America Tithonia pedunculata Cronquist - Oaxaca Tithonia pittieri (Greenm.) S.F.Blake - Central America Tithonia rotundifolia (Mill.) S.F.Blake - Mexico, Central America; naturalized in Florida, Louisiana, South America Tithonia tagetiflora Desf. - Veracruz Tithonia thurberi Gray – Arizona sunflower weed - Chihuahua, Sonora, Arizona (Pima County) Tithonia tubaeformis (Jacq.) Cass. - Mexico, Central America; naturalized in Argentina formerly included

see Comaclinium Enceliopsis Lasianthaea Viguiera

Tithonia angustifolia - Viguiera angustifolia Tithonia argophylla - Enceliopsis argophylla Tithonia decurrens - Viguiera decurrens Tithonia excelsa - Viguiera excelsa Tithonia ovata - Lasianthaea helianthoides Tithonia pusilla - Viguiera pusilla Tithonia splendens - Comaclinium montanum Mexican sunflower
Tithonia rotundifolia Tithonia tubaeformis
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