Musineon divaricatum (Pursh) Raf.  

Family: Apiaceae

Leafy Wild Parsley

[Lomatium divaricatum (Pursh) Nutt. ex Torr. & A. Gray, moreMusineum divaricatum , Musineum divaricatum var. hookeri Torr. & A. Gray, orth., Seseli divaricatum Pursh]