Difference between revisions of "Ageratina herbacea"

(A. Gray) R. M. King & H. Robinson

Phytologia 19: 222. 1970.

Common names: Fragrant snakeroot
Basionym: Eupatorium ageratifolium var. herbaceum A. Gray Smithsonian Contr. Knowl. 5(6): 74. 1853
Synonyms: Eupatorium herbaceum (A. Gray) Greene
Treatment appears in FNA Volume 21. Treatment on page 551. Mentioned on page 548.
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|common_names=Fragrant snakeroot
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|basionyms={{Treatment/ID/Basionym
 
|name=Eupatorium ageratifolium var. herbaceum
 
|name=Eupatorium ageratifolium var. herbaceum
 
|authority=A. Gray
 
|authority=A. Gray
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|publication_title=Smithsonian Contr. Knowl.
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|publication_place=5(6): 74. 1853
 
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|publication year=1970
 
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V19-20-21/V21_1398.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V21_1398.xml
 
|tribe=Asteraceae tribe Eupatorieae
 
|tribe=Asteraceae tribe Eupatorieae
 
|genus=Ageratina
 
|genus=Ageratina

Revision as of 18:47, 24 September 2019

Perennials or subshrubs, (20–)30–60(–80) cm (woody crowns and woody rhizomes). Stems erect (brittle), minutely puberulent. Leaves opposite; petioles 10–25 mm; blades triangular to lanceolate-ovate or ovate, 2–5(–7) × 1.5–3.5(–4.5) cm, bases truncate to shallowly cordate, margins dentate to serrate-dentate, abaxial faces sparsely hispidulous to glabrate, eglandular. Heads clustered. Peduncles 4–15 mm, puberulent. Involucres 4–5 mm. Phyllaries: apices acute, abaxial faces granular-puberulent. Corollas white, glabrous. Cypselae finely strigose-hispidulous. 2n = 34.


Phenology: Flowering (Jul–)Aug–Oct.
Habitat: Pine, pine-oak, juniper, and pinyon-juniper woodlands, rocks along streams, slopes, ridges, washes
Elevation: 1400–2700(–2900) m

Distribution

V21-1398-distribution-map.gif

Ariz., Calif., Colo., Nev., N.Mex., Tex., Utah, Mexico (Baja California, Chihuahua, Coahuila, Sonora).

Discussion

Ageratina herbacea is recognized by the distinctive color of its usually yellow-green, sometimes grayish, leaves, granular-puberulent involucres (with minute, thickened, eglandular hairs), and woody rhizomes.

Selected References

None.

Lower Taxa

None.
... more about "Ageratina herbacea"
Guy L. Nesom +
(A. Gray) R. M. King & H. Robinson +
Eupatorium ageratifolium var. herbaceum +
Fragrant snakeroot +
Ariz. +, Calif. +, Colo. +, Nev. +, N.Mex. +, Tex. +, Utah +, Mexico (Baja California +, Chihuahua +, Coahuila +  and Sonora). +
1400–2700(–2900) m +
Pine, pine-oak, juniper, and pinyon-juniper woodlands, rocks along streams, slopes, ridges, washes +
Flowering (Jul–)Aug–Oct. +
Eupatorium herbaceum +
Ageratina herbacea +
Ageratina +
species +