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CCDB → Angiosperms → Plantaginaceae → Penstemon → Penstemon spectabilis Thurb. ex A. Gray
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Penstemon spectabilis Thurb. ex A. Gray | Penstemon spectabilis Thurb. ex A. Gray | 8 | IPCN online | Parfitt, B. D., M. A. Baker & M. L. Gallagher. 1985. Chromosome Number Reports LXXXVI. Taxon 34: 159–164. |