Calea pellucidinerva Klatt ex T.Durand & Pitt. accepted as Calea urticifolia (Mill.) DC. (original description)
Calea pellucidinerva Klatt accepted as Calea urticifolia (Mill.) DC. (original description)
Cirsium costaricense Klatt ex T.Durand & Piit. (original description)
Eupatorium anisochromum Klatt ex T.Durand & Pitt. accepted as Ageratina anisochroma (Klatt) R.M.King & H.Rob. (original description)
Eupatorium anisochromum Klatt accepted as Ageratina anisochroma (Klatt) R.M.King & H.Rob. (original description)
Eupatorium badium Klatt, T.Durand & Pitt. (original description)
Eupatorium badium Klatt ex Klatt accepted as Ageratina badia (Klatt) R.M.King & H.Rob. (original description)
Eupatorium chlorophyllum Klatt ex T.Durand & Pitt. accepted as Ageratina badia (Klatt) R.M.King & H.Rob. (original description)
Eupatorium hymenophyllum Klatt accepted as Fleischmannia hymenophylla (Klatt) R.M.King & H.Rob. (original description)
Eupatorium hymenophyllum Klatt ex T.Durand & Pitt. accepted as Fleischmannia hymenophylla (Klatt) R.M.King & H.Rob. (original description)
Eupatorium pittieri Klatt ex T.Durand & Pitt. accepted as Koanophyllon pittieri (Klatt) R.M.King & H.Rob. (original description)
Eupatorium pratense Klatt accepted as Fleischmannia pratensis (Klatt) R.M.King & H.Rob. (original description)
Eupatorium pratense Klatt ex T.Durand & Pitt. accepted as Fleischmannia diversifolia (Schrad.) H.Rob. (original description)
Eupatorium roseum Klatt ex T.Durand & Pitt. accepted as Fleischmannia pratensis (Klatt) R.M.King & H.Rob. (original description)
Eupatorium valverdeanum Klatt ex T.Durand & Pitt. (original description)
Liabum polyanthum Klatt ex T.Durand & Pitt. (original description)
Mikania olivacea Klatt ex T.Durand & Pitt. (original description)
Montanoa dumicola Klatt ex T.Durand & Pitt. (original description)
Onoseris paniculata Klatt ex T.Durand & Pitt. (original description)
Piptocarpha costaricensis Klatt ex T.Durand & Pitt. (original description)
Schistocarpha paniculata Klatt ex T.Durand & Pitt. (original description)
Senecio durandii Klatt ex T.Durand & Pitt. (original description)
Senecio eriocephalus Klatt (original description)
Senecio eriocephalus klati ex T.Durand & Pitt. (original description)
Tithonia speciosa Klatt ex T.Durand & Pitt. (original description)
Viguiera strigosa Klatt (original description)
Viguiera sylvatica Klatt (original description)
Zexmenia virgulta Klatt (original description)
Zexmenia virgulta Klatt ex T.Durand & Pitt. (original description)