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CCDB → Angiosperms → Compositae → Heterotheca → Heterotheca echioides (Benth.) Shinners
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Heterotheca echioides (Benth.) Shinners | Heterotheca sessiliflora subsp. echioides (Benth.) Semple | 9II | IPCN online | Semple, J. C. 1985. Chromosome number determinations in fam. Compositae tribe Astereae. Rhodora 87: 517–527. | |||
| Heterotheca echioides (Benth.) Shinners | Heterotheca sessiliflora subsp. echioides (Benth.) Semple | 9II | IPCN online | Keil, D. J., M. A. Luckow & D. J. Pinkava. 1988. Chromosome studies in Asteraceae from the United States, Mexico, the West Indies, and South America. Amer. J. Bot. 75: 652–668. |