Actinella multiflora Clem. & E.G.Clem. (original description)
Chrysothamnus douglasii (A.Gray) Clem. & E.G.Clem. accepted as Chrysothamnus viscidiflorus (Hook.) Nutt. (original description)
Haplopappus croceus Clem. & E.G.Clem. (original description)
Haplopappus fremontii Clem. & E.G.Clem. (original description)
Haplopappus integrifolius Clem. & E.G.Clem. (original description)
Haplopappus lanceolatus Clem. & E.G.Clem. (original description)
Haplopappus lanuginosus Clem. & E.G.Clem. (original description)
Haplopappus lyallii Clem. & E.G.Clem. (original description)
Haplopappus macronema Clem. & E.G.Clem. (original description)
Haplopappus multicaulis Clem. & E.G.Clem. (original description)
Haplopappus nuttallii Clem. & E.G.Clem. (original description)
Haplopappus parryi Clem. & E.G.Clem. (original description)
Haplopappus pygmaeus Clem. & E.G.Clem. (original description)
Haplopappus rubiginosus Clem. & E.G.Clem. (original description)
Haplopappus spinulosus Clem. & E.G.Clem. (original description)
Haplopappus suffruticosus Clem. & E.G.Clem. (original description)
Haplopappus uniflorus Clem. & E.G.Clem. (original description)
Helenium helenioides Clem. & E.G.Clem. (original description)