| Name | Castilleja yukonis Pennell |
| Authorship | Pennell |
| Rank | Species |
| Placed in | Castilleja Mutis ex Linnaeus f. |
| Citation | 1934 Proc. Acad. Nat. Sci. Philadelphia 86(13): 531–532, map 3 |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Castilleja yukonis Pennell |
| Identification made in | [no date] (9), 1950 (1) |
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