Difference between revisions of "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.
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| latin_name = ''Tithonia''
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| growth_habit = ?  <!--- tree, shrub, herbaceous, vine, etc -->
 
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| high = ?  <!--- 1m (3 ft) -->
 
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| wide =    <!--- 65cm (25 inches) -->
 
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| origin = ?  <!--- Mexico, S America, S Europe, garden, etc -->
 
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| poisonous =    <!--- indicate parts of plants which are known/thought to be poisonous -->
 
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| lifespan =    <!--- perennial, annual, etc -->
 
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| features =    <!--- flowers, fragrance, fruit, naturalizes, invasive -->
 
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| color = IndianRed
 
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| regnum = Plantae
 
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|unranked_divisio = Angiosperms
 
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|unranked_classis = Eudicots
 
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|unranked_ordo = Asterids
 
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|ordo = Asterales
 
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|familia = Asteraceae
 
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|genus = Tithonia
 
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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.
 
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.
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==Species==
 
==Species==
 
Species include:
 
Species include:
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*''[[Tithonia calva]]''
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Species include:
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*''[[Tithonia diversifolia]]'' (tree marigold)  
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*''[[Tithonia brachypappa]]''<small> B. L. Rob.</small>
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*''[[Tithonia rotundifolia]]''   
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*''[[Tithonia calva]]''<small> Sch. Bip.</small>
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*''[[Tithonia diversifolia]]''<small> (Hemsl.) A. Gray</small>  (tree marigold)  
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*''[[Tithonia fruticosa]]''<small> Canby & Rose</small>
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*''[[Tithonia hondurensis]]''<small> La Duke</small>
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*''[[Tithonia koelzii]]''<small> McVaugh</small>
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*''[[Tithonia longiradiata]]''<small> (Bertol.) S. F. Blake</small>
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*''[[Tithonia pedunculata]]''<small> Cronquist</small>
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*''[[Tithonia rotundifolia]]''<small> (Mill.) S. F. Blake</small>  
 
*''[[Tithonia thurberi]]'' <small>Gray</small>  (Arizona sunflower weed)
 
*''[[Tithonia thurberi]]'' <small>Gray</small>  (Arizona sunflower weed)
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*''[[Tithonia tubaeformis]]''<small> (Jacq.) Cass.</small>
  
 
==Gallery==
 
==Gallery==
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Latest revision as of 15:53, 28 April 2010


Tithonia diversifolia


Plant Characteristics
Cultivation
Scientific Names

Asteraceae >

Tithonia >


If this plant info box on watering; zones; height; etc. is mostly empty you can click on the edit tab and fill in the blanks!


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 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.


Read about Tithonia in the Standard Cyclopedia of Horticulture 

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. CH


The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.


Cultivation

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Propagation

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Pests and diseases

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Species

Species include: Species include:

Gallery

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References

External links


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