Difference between revisions of "Ageratum houstonianum"

Miller

Gard. Dict. ed. 8, Ageratum no. 2. 1768.

Common names: Bluemink
Introduced
Synonyms: Ageratum conyzoides var. mexicanum (Sims) de Candolle
Treatment appears in FNA Volume 21. Treatment on page 483. Mentioned on page 482.
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|common_names=Bluemink
 
|common_names=Bluemink
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|special_status={{Treatment/ID/Special_status
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|code=I
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|label=Introduced
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}}
 
|basionyms=
 
|basionyms=
 
|synonyms={{Treatment/ID/Synonym
 
|synonyms={{Treatment/ID/Synonym
 
|name=Ageratum conyzoides var. mexicanum
 
|name=Ageratum conyzoides var. mexicanum
 
|authority=(Sims) de Candolle
 
|authority=(Sims) de Candolle
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|rank=variety
 
}}
 
}}
 
|hierarchy=Asteraceae;Asteraceae tribe Eupatorieae;Ageratum;Ageratum houstonianum
 
|hierarchy=Asteraceae;Asteraceae tribe Eupatorieae;Ageratum;Ageratum houstonianum
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|elevation=0–20 m
 
|elevation=0–20 m
 
|distribution=Ala.;Conn.;Fla.;Ga.;Mass.;N.C.;S.C.;Tex.;Mexico;Central America;introduced;Pacific Islands (Hawaii).
 
|distribution=Ala.;Conn.;Fla.;Ga.;Mass.;N.C.;S.C.;Tex.;Mexico;Central America;introduced;Pacific Islands (Hawaii).
|discussion=<p>Ageratum houstonianum is apparently native to southeastern Mexico and Central America; the North American plants are escapes and naturalized from cultivars. M. F. Johnson (1971) observed that forma isochroum (B. L. Robinson) M. F. Johnson (type from the state of Veracruz, Mexico) sometimes may be nearly eglandular.</p>
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|introduced=true
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|discussion=<p><i>Ageratum houstonianum</i> is apparently native to southeastern Mexico and Central America; the North American plants are escapes and naturalized from cultivars. M. F. Johnson (1971) observed that forma isochroum (B. L. Robinson) M. F. Johnson (type from the state of Veracruz, Mexico) sometimes may be nearly eglandular.</p>
 
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name=Ageratum houstonianum
 
name=Ageratum houstonianum
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|authority=Miller
 
|authority=Miller
 
|rank=species
 
|rank=species
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|publication title=Gard. Dict. ed.
 
|publication title=Gard. Dict. ed.
 
|publication year=1768
 
|publication year=1768
|special status=
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|special status=Introduced
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V19-20-21/V21_1213.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V19-20-21/V21_1213.xml
 
|tribe=Asteraceae tribe Eupatorieae
 
|tribe=Asteraceae tribe Eupatorieae
 
|genus=Ageratum
 
|genus=Ageratum

Latest revision as of 21:08, 5 November 2020

Annuals, 30–80 cm (fibrous-rooted). Stems erect to decumbent, sparsely to densely pilose. Leaf blades deltate to ovate, mostly 3–8 × 2.5–4 cm, margins toothed, abaxial faces sparsely to densely pilose, not evidently gland-dotted. Peduncles viscid-puberulent, pilose, and stipitate-glandular. Involucres ca. 4 × 5–6 mm. Phyllaries narrowly lanceolate (0.6–1 mm wide), stipitate-glandular, sparsely to densely pilose, eciliate or inconspicuously ciliate, tips gradually tapering, indurate-subulate, 0.8–2 mm. Corollas usually lavender, rarely white. Cypselae sparsely strigoso-hispidulous; pappi of 5 distinct, oblong scales 2–3 mm. 2n = 20.


Phenology: Flowering Jun–Aug.
Habitat: Disturbed sites, mostly coastal
Elevation: 0–20 m

Distribution

V21-1213-distribution-map.gif

Introduced; Ala., Conn., Fla., Ga., Mass., N.C., S.C., Tex., Mexico, Central America, introduced, Pacific Islands (Hawaii).

Discussion

Ageratum houstonianum is apparently native to southeastern Mexico and Central America; the North American plants are escapes and naturalized from cultivars. M. F. Johnson (1971) observed that forma isochroum (B. L. Robinson) M. F. Johnson (type from the state of Veracruz, Mexico) sometimes may be nearly eglandular.

Selected References

None.

Lower Taxa

None.
... more about "Ageratum houstonianum"
Guy L. Nesom +
Miller +
Bluemink +
Ala. +, Conn. +, Fla. +, Ga. +, Mass. +, N.C. +, S.C. +, Tex. +, Mexico +, Central America +, introduced +  and Pacific Islands (Hawaii). +
0–20 m +
Disturbed sites, mostly coastal +
Flowering Jun–Aug. +
Gard. Dict. ed. +
Introduced +
Ageratum conyzoides var. mexicanum +
Ageratum houstonianum +
Ageratum +
species +