Dwarf Hawksbeard, Low Hawksbeard, Tiny Hawksbeard: Askellia pygmaea Synonyms: Askellia nana ssp. ramosa, Crepis nana, Crepis nana ssp. nana, Crepis nana ssp. ramosa, Crepis nana var. lyratifolia, Crepis nana var. ramosa) -
Slender Hawksbeard: Crepis atribarba (Synonyms: Crepis atrabarba, Crepis atrabarba ssp. atrabarba, Crepis atrabarba ssp. originalis, Crepis atribarba ssp. atribarba, Crepis atribarba ssp. originalis) -
Smooth Hawksbeard: Crepis capillaris (Synonym: Crepis capillaris var. capillaris) -
Gray Hawksbeard, Intermediate Hawksbeard, Limestone Hawksbeard: Crepis intermedia (Synonym: Psilochenia intermedia) -
Western Hawksbeard: Crepis occidentalis (Synonyms: Crepis occidentalis ssp. conjuncta, Crepis occidentalis ssp. costata, Crepis occidentalis ssp. occidentalis, Crepis occidentalis ssp. pumila, Crepis occidentalis var. costata) -