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CCDB → Angiosperms → Compositae → Heliopsis → Heliopsis oppositifolia (L.) Druce
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Heliopsis oppositifolia (L.) Druce | Heliopsis helianthoides (L.) Sweet | 28(1) | Asteracea | Turner et al. 1962 Rhodora | ||
| Heliopsis oppositifolia (L.) Druce | Heliopsis helianthoides (L.) Sweet | 14II | IPCN online | Carr, G. D., R. M. King, A. M. Powell & H. Robinson. 1999. Chromosome numbers in Compositae. XVIII. Amer. J. Bot. 86(7): 1003–1013. |