Persicaria bicornis
| Persicaria bicornis (Rafinesque) Nieuwland, Amer. Midl. Naturalist 3: 201. 1914. | BASIONYM: Polygonum bicorne Rafinesque 1817. | |
Persicaria longistyla
| Persicaria longistyla (Small) Small, Fl. S.E. U.S. 377, 1330. 1903. | BASIONYM: Polygonum longistylum Small 1894. | |
Persicaria pensylvanica var. dura
| Persicaria pensylvanica (Linnaeus) M. Gómez de la Maza y Jiménez, var. dura (Stanford) C. F. Reed, Phytologia 50: 461. 1982. | BASIONYM: Polygonum pensylvanicum Linnaeus, var. durum Stanford 1925. | |
Polygonum bicorne
| Polygonum bicorne Rafinesque, Fl. Ludov. 29. 1817. | | |
Polygonum longistylum
| Polygonum longistylum Small, Bull. Torrey Bot. Club 21: 169. 1894. | | |
Polygonum pensylvanicum
| Polygonum pensylvanicum Linnaeus, Sp. Pl. 362. 1753. | | TYPE: PENNSYLVANIA: Without data, Kalm s.n. (lectotype: LINN 510.20). Lectotypified by Reveal, in C. E. Jarvis, Order Out of Chaos 758. 2007. |
Polygonum pensylvanicum var. durum
| Polygonum pensylvanicum Linnaeus, var. durum Stanford, Rhodora 27: 180. 1925. | | TYPE: FLORIDA: Gadsden Co.: River bottom at Chattahoochee Landing, 12 Sep 1884, Curtiss s.n. (holotype: GH). |
Polygonum pensylvanicum var. genuinum
| Polygonum pensylvanicum Linnaeus, var. genuinum Fernald, Rhodora 19: 72. 1917, nom. inadmiss. | BASIONYM: Polygonum pensylvanicum Linnaeus 1753. | |
Polygonum scabrum
| Polygonum scabrum Moench, Suppl. Meth. 267. 1802, nom. illegit. et non Moench 1794. | BASIONYM: Polygonum pensylvanicum Linnaeus 1753. | |
Persicaria mississipiensis
| Persicaria mississipiensis (Stanford) Small, Man. S.E. Fl. 456. 1933, as 'mississippiensis'. | BASIONYM: Polygonum mississipiense Stanford 1925. | |
Persicaria omissa
| Persicaria omissa (Greene) Greene, Leafl. Bot. Observ. Crit. 1: 24. 1904. | BASIONYM: Polygonum omissum Greene 1903. | |
Persicaria pensylvanica forma albinea
| Persicaria pensylvanica (Linnaeus) M. Gómez de la Maza y Jiménez, forma albinea (Farwell) D. Löve & Bernard, Svensk Bot. Tidskr. 53: 391. 1959. | BASIONYM: Polygonum pensylvanicum Linnaeus, forma albinea Farwell 1923. | |
Persicaria pensylvanica forma pallescens
| Persicaria pensylvanica (Linnaeus) M. Gómez de la Maza y Jiménez, forma pallescens (Stanford) Moldenke, Boissiera 7: 2. 1943. | BASIONYM: Polygonum pensylvanicum Linnaeus, forma pallescens Stanford 1925. | |
Persicaria pensylvanica var. laevigata
| Persicaria pensylvanica (Linnaeus) M. Gómez de la Maza y Jiménez, var. laevigata (Fernald) Ferguson, Bull. Torrey Bot. Club 51: 190. 1924. | BASIONYM: Polygonum pensylvanicum Linnaeus, var. laevigatum Fernald 1917. | |
Polygonum longistylum var. omissum
| Polygonum longistylum Small, var. omissum (Greene) Stanford, Rhodora 27: 183. 1925. | BASIONYM: Polygonum omissum Greene 1903. | |
Polygonum mississipiense
| Polygonum mississipiense Stanford, Rhodora 27: 183. 1925. | | TYPE: MISSISSIPPI: Harrison Co.: Long Beach, 8 Sep 1900, Tracy & Lloyd 133 (holotype: GH; isotype: MO). |
Polygonum mississipiense var. interius
| Polygonum mississipiense Stanford, var. interius Stanford, Rhodora 27: 184. 1925. | | TYPE: OKLAHOMA: Kingfisher Co.: Huntsville, 23 Aug 1896, Blankinship s.n. (holotype: GH). |
Polygonum omissum
| Polygonum omissum Greene, Pittonia 5: 200. 1903. | | TYPE: COLORADO: Weld Co.: Greeley, 20 Sep 1872, Greene s.n. (holotype: NDG). |
Polygonum oneillii
| Polygonum oneillii Brenckle, Phytologia 2: 405. 1948. | | TYPE: ALASKA: On the Nabesna Road, mile 89, 24 Jun 1947, Dutilly et al. 21556 (holotype: ?). |
Polygonum pensylvanicum forma albineum
| Polygonum pensylvanicum Linnaeus, forma albineum Farwell, Pap. Michigan Acad. Sci. 2: 21. 1923. | | TYPE: MICHIGAN: Wayne Co.: Slocum's Island in Elizabeth Park, Detroit River, 31 Aug 1921, Farwell et al. 5980 (holotype: BLH?). |
Polygonum pensylvanicum forma albinum
| Polygonum pensylvanicum Linnaeus, forma albinum Fernald, Rhodora 47: 137. 1945. | | TYPE: VIRGINIA: Brunswick Co.: Wooded bottomland of Meherrin River at Westward Bridge, 16 Sep 1944, Fernald & Lewis 14702 (holotype: GH). |
Polygonum pensylvanicum forma pallescens
| Polygonum pensylvanicum Linnaeus, forma pallescens Stanford, Rhodora 27: 180. 1925. | | TYPE: VERMONT: Windham Co.: Brattleboro, s.d., Robinson 143 (holotype: GH). |
Polygonum pensylvanicum var. eglandulosum
| Polygonum pensylvanicum Linnaeus, var. eglandulosum J. C. Myers, Castanea 7: 74. 1942. | | TYPE: OHIO: Ottawa Co.: South Bass Island, 14 Aug 1940, Myers s.n. (holotype: WVA). |
Polygonum pensylvanicum var. laevigatum
| Polygonum pensylvanicum Linnaeus, var. laevigatum Fernald, Rhodora 19: 73. 1917. | | TYPE: RHODE ISLAND: Providence Co.: Rumford, 6 Jul 1903, Williams s.n. (holotype: GH). |
Polygonum pensylvanicum var. nesophilum
| Polygonum pensylvanicum Linnaeus, var. nesophilum Fernald, Rhodora 19: 73. 1917. | | TYPE: RHODE ISLAND: Washington Co.: N end of Block Island, 28 Sep 1916, Collins et al. s.n. (holotype: GH). |
Polygonum pensylvanicum var. oneillei
| Polygonum pensylvanicum Linnaeus, var. oneillei (Brenckle) Hultén, Arkiv Bot. ser. 2. 7(1): 47. 1968. | BASIONYM: Polygonum oneillii Brenckle 1948. | |
Polygonum pensylvanicum var. rosiflorum
| Polygonum pensylvanicum Linnaeus, var. rosiflorum Norton, Castanea 7: 126. 1943. | | TYPE: MARYLAND: Charles Co.: Popes Creek, 22 Oct 1937, Allard 3881 (holotype: US). |
Polygonum pensylvanicum var. viridialbum
| Polygonum pensylvanicum Linnaeus, var. viridialbum Farwell, Pap. Michigan Acad. Sci. 3: 94. 1924. | | TYPE: MICHIGAN: Wayne Co.: Detroit, 15 Sep 1922, Farwell 6384 (lectotype: MICH; isolectotype: BLH). Lectotypified by McVaugh et al., Cranbrook Inst. Sci. Bull. 34: 61. 1953. |