This genus is much more diverse and the species more difficult to identify in western North America than in Michigan. The common name derives from the conspicuously colored tips of the bracts, as if dipped in paint. The corollas themselves are much less conspicuous.
1. Bracts and calyx tipped with bright red, orange, or yellow; mid-cauline leaves deeply lobed (rarely simple), hairy.
1. Bracts of inflorescence cream-colored or yellowish (lower ones often purplish); mid-cauline leaves entire, unlobed, glabrous.
All species found in Castilleja
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. July 20, 2019. https://www.michiganflora.net/genus.aspx?id=Castilleja.