Castilleja applegatei Fernald

Castilleja was named for Professor Domingo Castillejo (1744-1793), an instructor of botany at Cadiz, Spain

applegatei is for Elmer Applegate (1867-1949), a student of Oregon flora.

Fernald is, perhaps, for Merritt Lyndon Fernald (1873-1950), curator for the Gray Herbarium.