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CCDB → Angiosperms → Campanulaceae → Howellia → Howellia aquatilis A. Gray
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Howellia aquatilis A. Gray | Howellia aquatilis A. Gray | 11(1) | Asteracea | Weiler 1972 Ph. D. dissertation, University of Califomia. Davis, CA. |