White Hawkweed, White-flowered Hawkweed: Hieracium albiflorum (Synonym: Hieracium siskiyouense) -
Devil's Paintbrush, King Devil, Orange Hawkweed: Hieracium aurantiacum -
Bolander's Hawkweed: Hieracium bolanderi -
Meadow Hawkweed, Yellow King-devil, Yellow King Devil: Hieracium caespitosum (Synonym: Hieracium pratense) -
Whip Hawkweed: Hieracium flagellare (Synonyms: Hieracium flagellare var. amuracron, Hieracium flagellare var. cernuiforme, Hieracium xflagellare var. flagellare, Hieracium flagellare var. pilosisus) -
Flowery Hawkweed: Hieracium xfloribundum -
Yellow Devil Hawkweed: Hieracium glomeratum -
Greene's Hawkweed: Hieracium greenei -
Shaggy Hawkweed: Hieracium horridum -
Common Hawkweed, English Hawkweed, European Hawkweed, Lachenal's Hawkweed: Hieracium lachenalii (Synonyms: Hieracium acuminatum, Hieracium vulgatum) -
Wall Hawkweed: Hieracium murorum -
Parry's Hawkweed: Hieracium parryi (Synonym: Hieracium scouleri var. nudicaule) -
Mouse-ear Hawkweed: Hieracium pilosella (Synonyms: Hieracium pilosella var. nivea, Hieracium pilosella var. pilosella, Pilosella officinarum) -
Glaucous King-devil, Tall Hawkweed: Hieracium piloselloides - ?
Savoy Hawkweed: Hieracium sabaudum -
Hound-tongue Hawkweed, Scouler's Hawkweed, Scouler's Woollyweed, Woolly Weed: Hieracium scouleri (Synonyms: Hieracium albertinum, Hieracium chapacanum, Hieracium cusickii, Hieracium cynoglossoides, Hieracium nudicaule, Hieracium scouleri var. albertinum, Hieracium scouleri var. griseum, Hieracium scouleri var. scouleri) -
Forked Hawkweed: Hieracium xstoloniflorum (Synonyms: Hieracium xstoloniflorum var. cayouetteanum, Hieracium xstoloniflorum var. laurentianum, Hieracium xstoloniflorum var. stoloniflorum) -
Alpine Hawkweed, Slender Hawkweed: Hieracium triste (Synonyms: Hieracium gracile, Hieracium gracile var. densifloccosum, Hieracium gracile var. detonsum, Hieracium gracile var. gracile, Hieracium triste var. gracile) -
Narrowleaf Hawkweed, Umbellate Hawkweed: Hieracium umbellatum (Synonyms: Hieracium canadense, Hieracium kalmii, Hieracium umbellatum ssp. umbellatum) -