List of Castilleja species

This is a list of the species in the genus Castilleja. They are commonly called paintbrushes, painted-cups, or owl’s-clovers in English. These species and two natural hybrids are considered valid by Plants of the World Online (POWO) as of 2024. This list largely agrees with World Flora Online (WFO) with some exceptions. WFO lists Castilleja eggeri as unchecked. It also spells some species names differently, Castilleja rhexiifolia with a single "i" instead of a double "ii", Castilleja tolucensis as Castilleja toluccensis, and Castilleja virgatoides as Castilleja virgayoides. In addition one of the two hybrids, Castilleja × cognata, is listed in WFO as a species rather than as a hybrid.