Aspilia costaricensis (Benth.) Klatt accepted as Viguiera cordata (Hook. & Arn.) D'Arcy (original description)
Eupatorium chlorophyllum Klatt accepted as Ageratina badia (Klatt) R.M.King & H.Rob. (original description)
Eupatorium durandii Klatt accepted as Ageratina anisochroma (Klatt) R.M.King & H.Rob. (original description)
Eupatorium roseum Klatt accepted as Fleischmannia pratensis (Klatt) R.M.King & H.Rob. (original description)
Gymnolomia sylvatica Klatt (original description)
Liabum polyanthum Klatt accepted as Sinclairia polyantha (Klatt) Rydb. (original description)
Mikania olivacea Klatt accepted as Mikania guaco Humb. & Bonpl. (original description)
Mikania punctata Klatt accepted as Mikania vitifolia DC. (original description)
Montanoa dumicola Klatt accepted as Montanoa atriplicifolia (Pers.) Sch.Bip. (original description)
Schistocarpha paniculata Klatt accepted as Nordenstamia repanda (Wedd.) Lundin (original description)
Senecio durandii Klatt accepted as Charadranaetes durandii (Klatt) Janovec & H.Rob. (original description)