CCDB is a community resource. If you are aware of any missing data or if any of the counts are erroneous please submit it to the forms submit new counts, or report erroneous counts.
CCDB → Angiosperms → Compositae → Helianthus → Helianthus giganteus L.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Helianthus giganteus L. | Helianthus giganteus L. | 17II(1) | Asteracea | Long 1963 Ohio J. Sci. | |||
| Helianthus giganteus L. | Helianthus giganteus L. | 17 | IPCN online | Parfitt, B. D. 1981. ln Chromosome number reports LXXI. Taxon 30: 515–516. | |||
| ! | Helianthus giganteus L. | Helianthus giganteus L. | 34 | eFlora | |||
| Helianthus giganteus L. | Helianthus giganteus L. | 17 | Cave1956supp | Heiser & Smith 1955 |