Eupatorium rotundifolium var. ovatum

(Bigelow) Torrey ex de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 178. 1836.

Basionym: Eupatorium ovatum Bigelow Fl. Boston. ed. 2, 296. 1824
Synonyms: Eupatorium pubescens Muehlenberg ex Willdenow
Treatment appears in FNA Volume 21. Treatment on page 472. Mentioned on page 473.

Leaf blades 3-nerved distal to bases, 30–70 × 30–60 mm, broadest near middles, bases broadly cuneate to cuneate, margins serrate. 2n = 20, 30.

Phenology: Flowering Jul–Aug.
Habitat: Moist, low ground, roadsides, sandy soils
Elevation: 10–200+ m



Ala., Ark., Conn., Del., D.C., Fla., Ga., Ky., La., Md., Mass., Miss., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Va., W.Va.


Variety ovatum is an apomictic polyploid that may be a derivative of Eupatorium rotundifolium and E. sessilifolium. Morphologically, it is closer to E. rotundifolium than to E. sessilifolium; the name E. pubescens has priority at species rank.

Selected References


Lower Taxa

Kunsiri Chaw Siripun +  and Edward E. Schilling +
(Bigelow) Torrey ex de Candolle +
Eupatorium ovatum +
Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ky. +, La. +, Md. +, Mass. +, Miss. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, S.C. +, Tenn. +, Va. +  and W.Va. +
10–200+ m +
Moist, low ground, roadsides, sandy soils +
Flowering Jul–Aug. +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
Eupatorium pubescens +
Eupatorium rotundifolium var. ovatum +
Eupatorium rotundifolium +
variety +