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.

Endemic
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

Distribution

V21-1184-distribution-map.gif

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.

Discussion

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

None.

Lower Taxa

None.
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 +