Log In
New Account
Sitemap
Home
Specimen Search
Search Collections
Map Search
Exsiccati Search
Images
Image Library
Search Images
Inventories
State Floras
Kentucky Flora
Dynamic Tools
Dynamic Checklist
Dynamic Key
Ageratina adenophora
(Spreng.) R.M.King & H.Rob.
Family:
Asteraceae
Crofton Weed
[
Eupatorium adenophorum
Hort.Berol. ex Kunth,
more
Eupatorium glandulosum
H.B. & K.
]
FNA
Resources
Guy L. Nesom in Flora of North America (vol. 21)
Subshrubs,
50-220 cm.
Stems
(usually purplish when young) erect, stipitate-glandular.
Leaves
opposite; petioles 10-25 mm; blades (abaxially purple) ovate-lanceolate or ovate-deltate to lanceolate-ovate, (1.5-)2.5-5.5(-8) × 1.5-4(-6) cm, bases cuneate to obtuse or nearly truncate, margins serrate, apices acute to acuminate, abaxial faces stipitate- to sessile-glandular.
Heads
clustered.
Peduncles
5-12 mm, densely stipitate-glandular and sometimes also sparsely viscid-puberulent.
Involucres
3.5-4 mm.
Phyllaries:
apices acute, abaxial faces stipitate-glandular.
Corollas
white, pink-tinged, lobes sparsely hispidulous.
Cypselae
glabrous.
2
n
= 51.
Flowering Mar-Aug(-Sep). Stream margins, ditches, road embankments, hillsides; 400-900 m; intoduced; Calif.; Mexico; also introduced in Europe, Pacific Islands (New Zealand).
Open Interactive Map
Genevieve J Kline
Click to Display
100 Initial Images
- - - - -
View All Images
This project made possible by
National Science Foundation Award 1410069
Powered by
Symbiota
.