Boebera papposa (Vent.) Rydb. ex Rydb. accepted as Dyssodia papposa (Vent.) Hitchc. (original description)
Helianthus kellermanii Britton (original description)
Helianthus x_ambiguus (Torr. & A.Gray) Britton (original description)
Picradeniopsis Rydb. ex Britton (original description)
Picradeniopsis oppositifolia (Nutt.) Rydb. ex Rydb. (original description)
Rudbeckia palustris Eggert (original description)
Senecio fremontii (Torr. & A.Gray) Rydb. accepted as Senecio riddellii Torr. & A.Gray (original description)
Tetraneuris stenophylla Rydb. accepted as Tetraneuris scaposa var. scaposa (DC.) Greene (original description)
Townsendia intermedia Rydb. ex Britton (original description)