Eupatorium cuneifolium
| Eupatorium cuneifolium Willdenow, Sp. Pl. 3: 1753. 1803, nom. illegit. | BASIONYM: Eupatorium marrubium Walter 1788. | |
Eupatorium marrubium
| Eupatorium marrubium Walter, Fl. Carol. 199. 1788. | | TYPE: SOUTH CAROLINA: |
Eupatorium ovatum
| Eupatorium ovatum Bigelow, Fl. Boston., ed. 2. 296. 1824. | | TYPE: MASSACHUSETTS: |
Eupatorium pubescens
| Eupatorium pubescens Muhlenberg ex Willdenow, Sp. Pl. 3: 1755. 1803. | | |
Eupatorium rotundifolium subsp. ovatum
| Eupatorium rotundifolium Linnaeus, subsp. ovatum (Bigelow) Montgomery & Fairbrothers, Brittonia 22: 149. 1970. | BASIONYM: Eupatorium ovatum Bigelow 1824. | |
Eupatorium rotundifolium var. ovatum
| Eupatorium rotundifolium Linnaeus, var. ovatum (Bigelow) Torrey ex de Candolle, Prodr. 5: 178. 1836. | BASIONYM: Eupatorium ovatum Bigelow 1824. | |
Eupatorium rotundifolium var. pubescens
| Eupatorium rotundifolium Linnaeus, var. pubescens (Muhlenberg ex Willdenow) Britton et al., Prelim. Cat. 25. 1888. | BASIONYM: Eupatorium pubescens Muhlenberg ex Willdenow 1803. | |
Eupatorium rotundifolium var. scabridum
| Eupatorium rotundifolium Linnaeus, var. scabridum (Elliott) A. Gray, Syn. Fl. N. Amer. 1(2): 99. 1884. | BASIONYM: Eupatorium scabridum Elliott 1823. | |
Eupatorium rotundifolium var. typicum
| Eupatorium rotundifolium Linnaeus, var. typicum Fernald & Griscom, Rhodora 37: 181. 1935, nom. inadmiss. | BASIONYM: Eupatorium rotundifolium Linnaeus 1753. | |
Eupatorium scabridum
| Eupatorium scabridum Elliott, Sketch Bot. S. Carolina 2: 299. 1823. | | TYPE: SOUTH CAROLINA: |
Eupatorium teucrifolium
| Eupatorium teucrifolium Willdenow, Sp. Pl. 3: 1753. 1803. | | |
Eupatorium teucrifolium var. verbenifolium
| Eupatorium teucrifoium Willdenow, var. verbenifoilum (Michaux) de Candolle, Prodr. 5: 178. 1836. | BASIONYM: Eupatorium verbenifolium Michuax 1803. | |
Eupatorium verbenifolium
| Eupatorium verbenifolium Michaux, Fl. Bor.-Amer. 2: 98. 1803. | | TYPE: SOUTH CAROLINA: |
Uncasia cuneifolia
| Uncasia cuneifolia Greene, Leafl. Bot. Observ. Crit. 1: 13. 1903. | BASIONYM: Eupatorium cuneifolium Willdenow 1803, nom. illegit.; Eupatorium marrubium Walter 1788. | |
Uncasia pubescens
| Uncasia pubescens (Muhlenberg ex Willdenow) Greene, Leafl. Bot. Observ. Crit. 1: 13. 1903. | BASIONYM: Eupatorium pubescens Muhlenberg ex Willdenow 1803. | |
Uncasia rotundifolia
| Uncasia rotundifolia (Linnaeus) Greene, Leafl. Bot. Observ. Crit. 1: 13. 1903. | BASIONYM: Eupatorium rotundifolium Linnaeus 1753. | |
Uncasia scabrida
| Uncasia scabrida (Elliott) Greene, Leafl. Bot. Observ. Crit. 1: 13. 1903. | BASIONYM: Eupatorium scabridum Elliott 1823. | |
Uncasia verbenifolia
| Uncasia verbenifolia (Michaux) Greene, Leafl. Bot. Observ. Crit. 1: 13. 1903. | BASIONYM: Eupatorium verbenifolium Michaux 1803. | |
Eupatorium cordigerum
| Eupatorium cordigerum (Fernald) Fernald, Rhodora 47: 192. 1945. | BASIONYM: Eupatorium rotundifolium Linnaeus, var. cordigerum Fernald 1943. | |
Eupatorium obovatum
| Eupatorium obovatum Rafinesque, Med. Repos., ser. 2. 5; 359. 1808. | | TYPE: VIRGINIA: |
Eupatorium rotundifolium var. cordigerum
| Eupatorium rotundifolium Linnaeusm, var. cordigerum Fernald, Rhodora 45: 477. 1943. | | TYPE: VIRGINIA: Norfolk Co.: Along Northwest River, near Northwest, 20 Jun 1942, Fernald & Long 14426 (holotype: GH; isotype: PH). |