Synonyms
Actinea biennis Kuntze
Actinella biennis A.Gray
Hymenoxys biennis H.M.Hall
Ptilepida floribunda A.Heller
Hymenoxys richardsonii var. liguliflora (A.Nelson) Cockerell
Hymenoxys canescens var. biennis Cockerell
Hymenoxys canescens var. nevadensis Cockerell
Picradenia biennis Greene
Hymenoxys richardsonii var. utahensis Cockerell
Hymenoxys liguliflora (A.Nelson) Cockerell
Hymenopappus liguliflorus (A.Nelson) A.Nelson
Hymenoxys richardsonii var. nelsonii Cockerell
Hymenoxys richardsonii var. pumila Cockerell
Hymenoxys richardsonii var. macounii Cockerell
Hymenoxys richardsonii var. macrantha Cockerell