Eupatorium rotundifolium var. rotundifolium

Endemic
Treatment appears in FNA Volume 21. Treatment on page 473. Mentioned on page 472.

Leaf blades 3-nerved from bases, 20–43 × 13–35 mm, broadest near bases, bases broadly subtruncate to broadly cuneate, margins crenate. 2n = 20, 30.


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

Distribution

V21-1185-distribution-map.gif

Ala., Ark., Del., Fla., Ga., Ind., Ky., La., Md., Mass., Miss., N.J., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Va., W.Va.

Discussion

Variety rotundifolium includes both sexual diploids and apomictic polyploids, which are morphologically not distinguishable. The sexual diploids are somewhat more restricted geographically, occurring in a band across northern Florida and southern Georgia.

Selected References

None.

Lower Taxa

None.
Kunsiri Chaw Siripun +  and Edward E. Schilling +
Linnaeus +
Ala. +, Ark. +, Del. +, Fla. +, Ga. +, Ind. +, Ky. +, La. +, Md. +, Mass. +, Miss. +, N.J. +, N.C. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, Tenn. +, Tex. +, Va. +  and W.Va. +
10–200+ m +
Moist, low ground, roadsides, margins of ponds, sandy soils +
Flowering Jul–Aug. +
Compositae +
Eupatorium rotundifolium var. rotundifolium +
Eupatorium rotundifolium +
variety +