Achillea capillaris Poir. accepted as Achillea setacea Waldst. & Kit. accepted as Aspilia silphioides (Hook. & Arn.) Benth. & Hook.f. (original description)
Achillea coarctata Poir. (original description)
Achillea cylindrica Poir. accepted as Achillea nobilis L. (original description)
Ageratum caeruleum Hort. ex Poir. accepted as Hebeclinium macrophyllum (L.) DC. (original description)
Ageratum hirsutum Poir. accepted as Ageratum conyzoides L. (original description)
Arctotis staticifolia Poir. accepted as Gazania linearis var. linearis (Thunb.) Druce (original description)
Arctotis tenuifolia Poir. accepted as Dimorphotheca nudicaulis var. graminifolia Harv. (original description)
Artemisia absinthioides Poir. accepted as Artemisia siversiana Ehrh. ex Willd. accepted as Artemisia sieversiana Ehrh. ex Willd. (original description)
Artemisia lanuginosa Poir. accepted as Artemisia pedemontana Balb. (original description)
Aster hungaricus Poir. accepted as Symphyotrichum ×salignum (Willd.) G.L.Nesom (original description)
Aster pensilvanicus Poir. accepted as Symphyotrichum laeve (L.) Á.Löve & D.Löve (original description)
Aster praealtus Poir. accepted as Symphyotrichum praealtum (Poir.) G.L.Nesom (original description)
Aster strictus Poir. accepted as Symphyotrichum lanceolatum (Willd.) G.L.Nesom (original description)
Athanasia tricuspis Poir. accepted as Athanasia trifurcata (L.) L. (original description)
Baccharis parviflora Poir. accepted as Baccharis salicifolia (Ruiz & Pav.) Pers. (original description)
Baillieria erosa Poir. accepted as Clibadium erosum (Sw.) DC. (original description)
Baillieria pedunculosa Poir. accepted as Riencourtia pedunculosa (Rich.) Pruski (original description)
Baillieria terebinthacea Poir. accepted as Clibadium terebinthinaceum (Sw.) DC. (original description)
Bidens pauciflora Poir. accepted as Bidens parviflora Willd. (original description)
Buphthalmum chrysanthemoides Poir. accepted as Asteriscus imbricatus (Cav.) DC. (original description)
Buphthalmum melissoides Poir. accepted as Heliopsis helianthoides subsp. scabra (Dunal) T.R.Fisher (original description)