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CCDB → Angiosperms → Compositae → Helenium → Helenium flexuosum Raf.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Helenium flexuosum Raf. | Helenium flexuosum Raf. | 14(2) | Asteracea | Turner 1959 Brittonia | |||
| Helenium flexuosum Raf. | Helenium flexuosum Raf. | 14(1) | Asteracea | Jackson R. C. 1962 Madrono | |||
| Helenium flexuosum Raf. | Helenium flexuosum Raf. | 28 | IPCN72 | GRASHOFF, J.L., M.W. BIERNER, & D.K. NORTHINGTON. 1972. Chromosome numbers in North and Central American Compositae. Brittonia 24: 379-394. | |||
| Helenium flexuosum Raf. | Helenium flexuosum Raf. | 14 | IPCN67-71 | JONES, S.B. Jr. 1968. Chromosome numbers in southeastern United States Compositae I. Bull. Torrey Bot. Club 95: 393-395. | |||
| ! | Helenium flexuosum Raf. | Helenium flexuosum Raf. | 28 | eFlora | |||
| Helenium flexuosum Raf. | Helenium flexuosum Raf. | 14 | Cave1959 | Turner 1959a | |||
| Helenium nudiflorum Nutt. | Helenium flexuosum Raf. | 14 | Cave1962 | Jackson 1962b |