Flora of North America species comparison

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Ageratina wrightii

Wright's snakeroot
Habit Shrubs, 50–150 cm.
Stems

erect, puberulous.
Leaves

opposite proximally, alternate on distal 1/3–1/2 of stem;

petioles narrowly winged, 3–5(–8) mm;

blades ovate to deltate-ovate, mostly 1–2 × 0.5–1.5(–2) cm, bases truncate to cuneate or attenuate, margins entire or shallowly crenate, apices acute to blunt or obtuse, abaxial faces gland-dotted.
Peduncles

1–3 mm, puberulent.
Involucres

3.5–4.5 mm.
Corollas

pinkish white to pink, glabrous.
Phyllaries

apices acute, abaxial faces puberulent.
Heads

clustered.
Cypselae

sparsely hispidulous.

Ageratina wrightii
Phenology Flowering (Jul–)Aug–Oct(–Nov).
Habitat Limestone slopes, ledges, alluvium, in brushy vegetation
Elevation 1300–2200 m (4300–7200 ft)
Distribution
from FNA
AZ; NM; TX; Mexico
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 21, p. 552.
Parent taxa Asteraceae > tribe Eupatorieae > Ageratina
Sibling taxa
A. adenophora, A. altissima, A. aromatica, A. havanensis, A. herbacea, A. jucunda, A. lemmonii, A. luciae-brauniae, A. occidentalis, A. paupercula, A. rothrockii, A. shastensis, A. thyrsiflora
Synonyms Eupatorium wrightii
Name authority (A. Gray) R. M. King & H. Robinson: Phytologia 19: 228. (1970)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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