There were 2 illustrations found for F. Emil
6 318898 Dalea gattingeri (A.Heller) Barneby [125 1238237 Kuhnistera gattingeri A.Heller]Bull. Torrey Bot. Club, vol. 23 : t. 262 (1896) [F. Emil]
2 833073 Potentilla biennis GreeneP.A. Rydberg, Monogr. N. Amer. Potent.: t. 9 (1898) [F. Emil]