Baccharis erectifolia Steyerm. (original description)
Baccharis meridensis Steyerm. (original description)
Baccharis ptariensis Steyerm. accepted as Baccharis vitis-idaea Oliv. ex Thurn (original description)
Baccharis venulosa var. cuspidibracteata Steyerm. accepted as Baccharis brachylaenoides var. brachylaenoides accepted as Baccharis oblongifolia (Ruiz & Pav.) Pers. (original description)
Blennosperma cretacea (Gleason) Steyerm. (original description)
Blennosperma cretacea var. composita Steyerm. (original description)
Blennosperma ptariana Steyerm. (original description)
Calea clematidifolia Steyerm. accepted as Calea solidaginea subsp. deltophylla (R.S.Cowan) Pruski (original description)
Calea lucidivenia f. lanceolata Steyerm. accepted as Calea lucidivenia Gleason & S.F.Blake (original description)
Calea oliveri var. taeniotricha Steyerm. accepted as Calea oliveri B.L.Rob. & Greenm. (original description)
Clibadium surinamense var. macrophyllum Steyerm. accepted as Clibadium surinamense L. (original description)
Eupatorium benjamin-lincolnii var. itacalumiense (Sch.Bip. ex Baker) Steyerm. accepted as Heterocondylus itacolumiensis (Sch.Bip. ex Baker) R.M.King & H.Rob. (original description)
Eupatorium benjamin-lincolnii var. vernicosum (Baker) Steyerm. accepted as Symphyopappus reitzii (Cabrera) R.M.King & H.Rob. (original description)
Eupatorium cuneatum f. intermedium (Dusén ex Malme) Steyerm. (original description)
Eupatorium pharcidodes var. sororopanense Steyerm. (original description)
Eupatorium roraimense f. albisetum Steyerm. accepted as Ageratina roraimensis (N.E.Br.) R.M.King & H.Rob. (original description)
Eupatorium roupalifolium f. latifolium Steyerm. accepted as Guayania roupalifolia (B.L.Rob.) R.M.King & H.Rob. (original description)
Eupatorium roupalifolium var. subintegrifolium Steyerm. accepted as Guayania roupalifolia (B.L.Rob.) R.M.King & H.Rob. (original description)
Eupatorium symphyopappus var. pohlianum (Baker) Steyerm. accepted as Symphyopappus decussatus Turcz. (original description)
Gnaphalium caeruleocanum Steyerm. accepted as Pseudognaphalium caeruleocanum (Steyerm.) Anderb. (original description)
Hieracium frigidum f. tamaense Steyerm. (original description)
Hymenostephium viride Steyerm. (original description)
Mikania banisteriae f. lanuginosa (DC.) Steyerm. (original description)
Mikania banisteriae f. lehmanniana (Hieron.) Steyerm. accepted as Mikania banisteriae DC. (original description)
Mikania banisteriae f. subglabra (B.L.Rob.) Steyerm. (original description)
Mikania banisteriae var. monagasensis (V.M.Badillo) Steyerm. (original description)
Mikania hookeriana var. crassicaulis Steyerm. accepted as Mikania houstoniana (L.) B.L.Rob. (original description)
Mikania lucida f. hirticaulis Steyerm. (original description)
Mikania stuebelii var. larensis (V.M.Badillo) Steyerm. accepted as Mikania stuebelii Hieron. (original description)
Oyedaea verbesinoides var. glabrior Steyerm. accepted as Oyedaea verbesinoides var. verbesinoides (original description)
Oyedaea verbesinoides var. hypomalaca Steyerm. (original description)
Pectis venezuelensis Steyerm. (original description)
Soliva anthemifolia var. lanuginosa Steyerm. (original description)
Stenopadus talaumifolius var. magnifolius Steyerm. accepted as Stenopadus talaumifolius S.F.Blake (original description)