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CCDB → Angiosperms → Compositae → Helenium → Helenium nudiflorum Nutt.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Helenium nudiflorum Nutt. | Helenium flexuosum Raf. | 14 | Cave1962 | Jackson 1962b |