Heleniastrum nudiflorum
| Heleniastrum nudiflorum (Nuttall) Kuntze, Revis. Gen. Pl. 1: 342. 1891. | BASIONYM: Helenium nudiflorum Nuttall 1841. | |
Helenium anceps
| Helenium anceps Rafinesque, New Fl. 4: 81. 1838 ("1836"). | | TYPE: FLORIDA: |
Helenium brachypodum
| Helenium brachypodum (Torrey & A. Gray) A. W. Wood, Amer. Bot. Fl. 182. 1870. | BASIONYM: Leptopoda brachypoda Torrey & A. Gray 1842. | |
Helenium floridanum
| Helenium floridanum Fernald, Rhodora 45: 494, pl. 799(3-4). 1943. | | TYPE: FLORIDA: Hernando Co.: Fitzgerald, s.d., Curtiss 6663 (holotype: NY; isotypes: MIN, MO, NY 2 shts, UC, US). |
Helenium nudiflorum
| Helenium nudiflorum Nuttall, Trans. Amer. Philos. Soc., ser. 2. 7: 384. 1841. | | TYPE: ARKANSAS: |
Leptopoda brachypoda
| Leptopoda brachypoda Torrey & A. Gray, Fl. N. Amer. 2: 388. 1842. | | TYPE: LOUISIANA: Without data, Aug 1840, Hale s.n. (lectotype: NY). Lectotypified by H. Rock, Rhodora 49: 211. 1957. |
Helenium atropurpureum
| Helenium atropurpureum Kunth & Bouche, Index Sem. Hort. Berol., 1845. 12. 1845. | | |
Helenium atropurpureum var. grandicephalum
| Helenium atropurpureum Kunth & Bouche, var. grandicephalum Lemaire, Ill. Hort. 10: 375. 1863. | | |
Helenium dichotomum
| Helenium dichotomum Rafinesque, New Fl. 4: 81. 1838 ("1836"). | | TYPE: KENTUCKY: |
Helenium godfreyi
| Helenium godfreyi Fernald, Rhodora 45: 494, pl. 799(1-2). 1943. | | TYPE: SOUTH CAROLINA: Berkeley Co.: Pineville, 14 Jul 1939, Godfrey & Tryon 586 (holotype: GH; isotypes: NY, UC, US). |
Helenium micranthum
| Helenium micranthum Nuttall, Trans. Amer. Philos. Soc., ser. 2. 7: 385. 1841. | | TYPE: SOUTH CAROLINA: |
Helenium nudiflorum forma homochromum
| Helenium nudiflorum Nuttall, forma homochromum M. D. Howe, Rhodora 70: 454. 1968. | | TYPE: NEW YORK: Oneida Co.: W shore of Hinckley Lake near the mouth of Beaver Creek, ca. 1 mi. N of Hinckley, Sep 1967, Howe 3246 (holotype: ?). |
Helenium nudiflorum var. purpureum
| Helenium nudiflorum Nuttall, var. purpureum Hale ex A. Gray, Proc. Amer. Acad. Arts 9: 203. 1874. | | TYPE: LOUISIANA: Without data, Leavenworth s.n. (lectotype: NY). Lectotypified by H. Rock, Rhodora 59: 211. 1957. |
Helenium polyphyllum
| Helenium polyphyllum Small, Fl. S.E. U.S. 1291, 1341. 1903. | | TYPE: TENNESSEE: Madison Co.: Jackson, Sep 1892, Bain 77 (holotype: NY; isotype: US). |
Helenium seminariense
| Helenium seminariense Featherman, Rep. S. Centr. Louisiana 1870; Fl. Ludov. 74. 1871. | | TYPE: LOUISIANA: Without data (lectotype: GH). Lectotypified by H. Rock, Rhodora 59: 211. 1957. |