| Name | Castilleja attenuata (A. Gray) Chuang & Heckard |
| Authorship | (A. Gray) Chuang & Heckard |
| Rank | Species |
| Placed in | Castilleja Mutis ex Linnaeus f. |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Castilleja attenuata (A. Gray) Chuang & Heckard |
| Identification made in | [no date] (10) |
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