| Name | Castilleja villicaulis Pennell & Ownbey |
| Authorship | Pennell & Ownbey |
| Rank | Species |
| Placed in | Castilleja Mutis ex Linnaeus f. |
| Citation | 1947 Proc. Acad. Nat. Sci. Philadelphia 99(7): 177–178 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Castilleja villicaulis Pennell & Ownbey |
| Identification made in | [no date] (1) |
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