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CCDB → Angiosperms → Compositae → Heterotheca → Heterotheca sessiliflora var. fastigiata (Greene) Semple
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Heterotheca sessiliflora var. fastigiata (Greene) Semple | Heterotheca sessiliflora subsp. fastigiata (Greene) Semple | 9II | IPCN online | Semple, J. C., C. Xiang, J. Zhang, M. Horsburgh & R. Cook. 2001. Chromosme number determinations in Fam. Compositae, tribe Astereae. VI. Western North American taxa and comments on generic treatments of North American asters. Rhodora 103: 202–218. |