Shaggy Horkelia: Horkelia congesta ssp. congesta (Synonym: Horkelia congesta var. congesta) -
Josephine Horkelia: Horkelia congesta ssp. nemorosa (Synonym: Horkelia congesta var. nemorosa) -
Caraway leaf Horkelia, Carrotleaf Horkelia: Horkelia daucifolia var. caruifolia -
Carrotleaf Horkelia: Horkelia daucifolia var. daucifolia -
Big-headed Horkelia: Horkelia fusca ssp. capitata (Synonym: Horkelia fusca var. capitata) -
Pinewoods Horkelia: Horkelia fusca ssp. filicoides (Synonym: Horkelia fusca var. filicoides) -
Tawny Horkelia, Pink Pinwheels: Horkelia fusca ssp. fusca (Synonyms: Horkelia brownii, Horkelia caeruleomontana, Horkelia fusca var. fusca, Horkelia tenuisecta, Potentilla andersonii, Potentilla capitata, Potentialla douglasii, Potentilla douglasii var. tenuisecta) -
Small-flowered Horkelia: Horkelia fusca ssp. parviflora (Synonyms: Horkelia fusca var. parviflora, Horkelia fusca var. pseudocapitata, Horkelia parviflora) -
Henderson's Horkelia: Horkelia hendersoniii - ?
Howell's Horkelia: Horkelia howellii -
Clustered Horkelia, Threetooth Horkelia: Horkelia tridentata var. tridentata (Synonym: Horkelia tridentata ssp. tridentata) -