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CCDB → Angiosperms → Compositae → Helianthus → Helianthus longifolius Pursh
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Helianthus longifolius Pursh | Helianthus longifolius Pursh | 17(1) | Asteracea | Smith D. M. & M. 1959 Rhodora | |||
| ! | Helianthus longifolius Pursh | Helianthus longifolius Pursh | 34 | eFlora |