Dwarf Hawksbeard, Tiny Hawksbeard: Askellia pygmaea (Synonyms: Crepis nana, Crepis nana ssp. nana, Crepis nana ssp. ramosa, Crepis nana var. lyratifolia, Crepis nana var. ramosa) -
Long-leaved Hawksbeard, Tapertip Hawksbeard: Crepis acuminata (Synonym: Crepis acuminata ssp. acuminata)
Slender Hawksbeard: Crepis atribarba (Synonyms: Crepis atribarba ssp. atribarba, Crepis atribarba ssp. cytotaxonomicorum, Crepis atribarba ssp. originalis, Crepis atribarba ssp. typicus, Crepis atribarba var. cytotaxonomicorum, Psilochenia atribarba) -
Baker's Hawksbeard: Crepis bakeri (Synonyms: Crepis bakeri ssp. bakeri, Crepis bakeri ssp. cusickii, Crepis bakeri ssp. idahoensis)
Bearded Hawksbeard: Crepis barbigera
Smooth Hawksbeard: Crepis capillaris (Synonym: Crepis capillaris var. capillaris) -
Gray Hawksbeard, Intermediate Hawksbeard, Limestone Hawksbeard: Crepis intermedia (Synonym: Psilochenia intermedia) -
Low Hawksbeard, Modoc Hawksbeard: Crepis modocensis (Synonyms: Crepis modocensis ssp. modocensis, Crepis modocensis ssp. subacaulis, Crepis modocensis var. modocensis) -
Mountain Hawksbeard, Siskiyou Hawksbeard: Crepis monticola
French Hawksbeard, Turkish Hawk's-beard: Crepis nicaeensis
Western Hawksbeard, Largeflower Hawksbeard: Crepis occidentalis (Synonyms: Crepis occidentalis ssp. conjuncta, Crepis occidentalis ssp. costata, Crepis occidentalis ssp. occidentalis, Crepis occidentalis ssp. pumila, Crepis occidentalis var. costata)
Naked-stemmed Hawksbeard: Crepis pleurocarpa (Synonym: Crepis acuminata var. pleurocarpa)
Small-flowered Hawksbeard: Crepis pulchra
Dandelion Hawksbeard, Meadow Hawksbeard: Crepis runcinata ssp. hispidulosa
Bristly Hawksbeard, Rough Hawksbeard: Crepis setosa
Annual Hawksbeard, Narrow-leaf Hawksbeard, Rooftop Hawksbeard: Crepis tectorum
Beaked Hawksbeard, Weedy Hawksbeard: Crepis vesicaria ssp. taraxacifolia (Synonym: Crepis vesicaria ssp. haensleri)