| Name | Castilleja flava var. rustica (Piper) N. H. Holmgren |
| Authorship | (Piper) N. H. Holmgren |
| Rank | Variety |
| Placed in | Castilleja flava S. Watson |
| Citation | 1984 Intermount. Fl. [Cronquist et al.] 4: 484 |
| Holdings | 6 Specimens held in the Harvard University Herbaria identified as Castilleja flava var. rustica (Piper) N. H. Holmgren |
| Identification made in | [no date] (6) |
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