Edit Plant: Tithonia

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'''''Tithonia''''' is a genus of [[flowering plant]]s in the family [[Asteraceae]]. It includes 11 species, with a center of distribution in Mexico but with one species extending into the southwestern U.S. 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. {{Inc| Tithonia (of mythological derivation; Tithonus was the favorite of Aurora). Compositae. Robust half-hardy annuals sometimes shrubby at base: lvs. alternate, petioled, entire or 3-lobed: heads large, on a long thickened peduncle, heterogamous; ray-fls. neuter, disk-fls. perfect and fertile; involucre hemispherical or broadly campanulate; receptacle convex; corolla yellow, ray-fls. ligulate, disk-fls. tubular, 5-toothed: achenes somewhat pilose.—About 10 species, Mex., Cent. Amer., and W. Indies. {{SCH}} }} ==Cultivation== {{edit-cult}} ===Propagation=== {{edit-prop}} ===Pests and diseases=== {{edit-pests}} ==Species== Species include: Species include: *''[[Tithonia brachypappa]]'' B. L. Rob. *''[[Tithonia calva]]'' Sch. Bip. *''[[Tithonia diversifolia]]'' (Hemsl.) A. Gray (tree marigold) *''[[Tithonia fruticosa]]'' Canby & Rose *''[[Tithonia hondurensis]]'' La Duke *''[[Tithonia koelzii]]'' McVaugh *''[[Tithonia longiradiata]]'' (Bertol.) S. F. Blake *''[[Tithonia pedunculata]]'' Cronquist *''[[Tithonia rotundifolia]]'' (Mill.) S. F. Blake *''[[Tithonia thurberi]]'' Gray (Arizona sunflower weed) *''[[Tithonia tubaeformis]]'' (Jacq.) Cass. ==Gallery== {{photo-sources}} <gallery> Image:Upload.png| photo 1 Image:Upload.png| photo 2 Image:Upload.png| photo 3 </gallery> ==References== *[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963    ==External links== *{{wplink}} __NOTOC__

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