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CCDB → Angiosperms → Orobanchaceae → Castilleja → Castilleja peirsonii Eastw.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Castilleja peirsonii Eastw. | Castilleja parviflora Bong. | 12 | IPCN online | Reveal, J. L. & R. Spellenberg. 1976. Miscellaneous chromosome counts of Western American plants - III. Rhodora 78: 37–52. |