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CCDB → Angiosperms → Compositae → Pityopsis → Heterotheca aspera (Shuttlew.) Shinners
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Heterotheca aspera (Shuttlew.) Shinners | Pityopsis aspera var. aspera | 36 | IPCN online | Semple, J. C. 1977. Cytotaxonomy of Chrysopsis and Heterotheca (Compositae Astereae): A new interpretation of phylogeny. Canad. J. Bot. 55: 2503–2513. |