Aster laevis var. latifolius Porter accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve (original description)
Aster lowrieanus Porter accepted as Symphyotrichum cordifolium (L.) G.L.Nesom (original description)
Aster lowrieanus var. incisus (Britton) Porter accepted as Symphyotrichum cordifolium (L.) G.L.Nesom (original description)
Aster lowrieanus var. lanceolatus (Porter) Porter accepted as Symphyotrichum cordifolium (L.) G.L.Nesom (original description)
Aster nemoralis var. blakei Porter accepted as Oclemena ×blakei (Porter) G.L.Nesom (original description)
Hieracium scribneri Small (original description)
Lophopappus Rusby (original description)
Lophopappus foliosus Rusby (original description)
Pluchea foetida var. imbricata Kearney accepted as Pluchea foetida (L.) DC. (original description)
Solidago purshii Porter accepted as Solidago uliginosa Nutt. (original description)
Solidago purshii Porter. (original description)