Flaveria longifolia var. subtomentosa Greenm. & C.H.Thomps. accepted as Flaveria pubescens Rydb. (original description)
Sclerocarpus elongatus (Greenm.) Greenm. & C.H.Thomps. accepted as Aldama dentata La Llave ex La Llave (original description)
Senecio alatipes Greenm. (original description)
Senecio albonervius Greenm. (original description)
Senecio angulifolius var. ingens Greenm. accepted as Roldana angulifolia (DC.) H.Rob. & Brettell (original description)
Senecio appendiculatus Greenm. accepted as Packera neomexicana var. neomexicana (A.Gray) W.A.Weber & Á.Löve (original description)
Senecio brachyanthus Greenm. accepted as Roldana chapalensis (S.Watson) H.Rob. & Brettell (original description)
Senecio carnerensis Greenm. (original description)
Senecio chrismarii Greenm. accepted as Roldana hederifolia (Hemsl.) H.Rob. & Brettell (original description)
Senecio convallium Greenm. accepted as Packera cana (Hook.) W.A.Weber & Á.Löve (original description)
Senecio coulteri Greenm. (original description)
Senecio filicifolius Greenm. ex Rose & Standl. (original description)
Senecio hyperborealis Greenm. accepted as Packera hyperborealis (Greenm.) Á.Löve & D.Löve (original description)
Senecio hypomalacus Greenm. accepted as Roldana oaxacana (Hemsl.) H.Rob. & Brettell (original description)
Senecio iodanthus Greenm. (original description)
Senecio kerberi Greenm. (original description)
Senecio kernensis Greenm. (original description)
Senecio klattii Greenm. (original description)
Senecio macropus Greenm. accepted as Packera quercetorum (Greene) C.Jeffrey (original description)
Senecio oreophilus Greenm. accepted as Packera neomexicana var. neomexicana (A.Gray) W.A.Weber & Á.Löve (original description)
Senecio oreopolus Greenm. accepted as Packera cana (Hook.) W.A.Weber & Á.Löve (original description)
Senecio oreopolus var. aphanactis Greenm. (original description)
Senecio prolixus Greenm. accepted as Packera multilobata (Torr. & A.Gray ex A.Gray) W.A.Weber & Á.Löve (original description)
Senecio subauriculatus Greenm. (original description)
Senecio teliformis Greenm. (original description)
Senecio velatus Greenm. (original description)
Senecio wrightii Greenm. accepted as Packera cynthioides (Greene) W.A.Weber & Á.Löve (original description)