Fagus grandifolia var. caroliniana f. mollis Fernald & Rehder                       Isotype

Faxonanthus pringlei Greenman                                                                     Isotype

Festuca beamanii E. B. Alexeev [or Alekseev]                                                Isotype

Festuca howellii Hack. ex Beal                                                                       Lectotype

Festuca ovina var. columbiana Beal                                                               Holotype

Festuca ovina var. ingrata Hackel ex Beal                                                      Holotype

Festuca rubra var. littoralis Vasey ex Beal                                                     Lectotype

Ficus subrotundifolia Greenman                                                                     Isosyntype

Ficus subrotundifolia Greenman                                                                     Isosyntype

Flaveria cronquistii A. M. Powell                                                                   Isotype

Flourensia glutinosa (Robins. & Greenm.) S.F. Blake                                     Isotype

Forestiera racemosa Watson                                                                          Isotype

Fragaria bracteata Heller                                                                               Isotype

Fragaria multicipita Fernald                                                                           Isotype

Frasera speciosa var. scabra Jones                                                                 Isotype

Frasera utahensis M. E. Jones                                                                        Isotype

Fraxinus americana forma barrii W. H. Wagner                                            Isotype

Freziera inaequilatera Britton                                                                         Isotype