Actinella scaposa var. linearis Nutt. (original description)
Actinomeris sect. Achaeta Nutt. (original description)
Artemisia ludoviciana var. latiloba Nutt. accepted as Artemisia ludoviciana subsp. candicans (Rydb.) D.D.Keck (original description)
Artemisia sect. Tanaceum Nutt. (original description)
Berlandiera sect. Silphiastrum Nutt. (original description)
Bidens sect. Campylotheca (Cass.) Nutt. (original description)
Chrysothamnus pumilus var. euthamioides Nutt. (original description)
Coreopsis sect. Eublepharis Nutt. (original description)
Coreopsis sect. Gyrophyllum Nutt. (original description)
Coreopsis sect. Rabdocaulis Nutt. (original description)
Crepis sect. Leptotheca Nutt. (original description)
Erigeron sect. Phaenactis Nutt. (original description)
Eupatorium occidentale var. subroseum Nutt. (original description)
Euthamia tenuifolia var. glutinosa Nutt. (original description)
Franseria sect. Ambrosidium Nutt. (original description)
Galatella nemoralis var. rubella Nutt. (original description)
Gnaphalium sect. Omalotheca (Cass.) Nutt. accepted as Gnaphalium L. (original description)
Homopappus sect. Myrianthus Nutt. (original description)
Iva foliosa Nutt. (original description)
Iva sect. Picrotus Nutt. (original description)
Kymapleura heterophylla Nutt. (original description)
Lasthenia sect. Hologymne (Bartl.) Nutt. (original description)
Macronema sect. Eugymna Nutt. (original description)
Madaroglossa sect. Callichroa (Fisch. & C.A.Mey.) Nutt. (original description)
Micropus sect. Rhyncholepis Nutt. (original description)
Mulgedium pulchellum (Pursh) Nutt. accepted as Lactuca tatarica (L.) C.A.Mey. (original description)
Ptilomeris sect. Ptilopsis Nutt. (original description)
Rudbeckia sect. Akosmia Nutt. (original description)
Sericocarpus rigidus var. laevicaulis Nutt. (original description)
Tripolium flexuosum Nutt. (original description)
Uropappus sect. Brachycarpa Nutt. accepted as Microseris D.Don (original description)
Uropappus sect. Calocalais (DC.) Nutt. (original description)
Wyethia sect. Alarconia (DC.) Nutt. (original description)