Eupatorium rotundifolium var. ovatum
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
Revision as of 18:46, 24 September 2019 by FNA>Volume Importer
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
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.