The Genus Orthocarpus
Attenuate Indian Paintbrush, Narrow-leaf Owl-clover, Valley-tassels: Castilleja attenuata (Synonym: Orthocarpus attenuatus) - Corolla large, creamy white, 12-22 mm long. Lower lip of corolla not noticeably three-pouched. Floral bracts white-tipped.
Hairy Indian Paintbrush, Hairy Owl-clover, Thin Paintbrush: Castilleja tenuis (Synonyms: Orthocarpus hispidus, Orthocarpus rarior, Orthocarpus tenuis, Triphysaria hispida) - Corolla large, white, creamy or light yellow, 15-20 mm long. Lower lip of corolla noticeably three-pouched.
Rosy Owl-clover, Rosy Owl's-clover: Orthocarpus bracteosus (Synonym: Orthocarpus bracteosus var. albus) - Corolla large, rose-purple in color, 12-18 mm long. Lower lip of corolla not noticeably three-pouched. Floral bracts sharply 3-cleft.
Narrow-leafed Owl-clover, Thinleaved Owl's-clover, Thin-leaved Owl-clover: Orthocarpus tenuifolius -
Dwarf Owl-clover, Dwarf Owl's-clover, Native Owl-clover: Triphysaria pusilla (Synonyms: Orthocarpus pusillus, Orthocarpus pusillus var. densiuscuus) - Plants minute with tiny corollas 6 mm long or shorter. Bracts only slightly different from the leaves.