| Name | Castilleja williamsii Pennell |
| Authorship | Pennell |
| Rank | Species |
| Placed in | Castilleja Mutis ex Linnaeus f. |
| Citation | 1935 Use: Academy of natural sciences of Philadelphia ... Monographs. Vol. no. 1 530–531, map 152 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Castilleja williamsii Pennell |
| Identification made in | [no date] (1), 1932 (2) |
Copyright © 2013 The President and Fellows of Harvard College | Accessibility