Actinea ursina Standl. accepted as Tetraneuris linearifolia (Hook.) Greene (original description)
Aphanactis standleyi Steyerm. accepted as Jaegeria standleyi (Steyerm.) B.L.Turner (original description)
Archibaccharis blakeana Standl. & Steyerm. (original description)
Aster gentryi Standl. accepted as Psilactis gentryi (Standl.) D.R.Morgan (original description)
Bidens chrysanthemifolia var. parvulifolia (Sherff) Sherff accepted as Bidens chrysanthemifolia (Kunth) Sherff (original description)
Bidens leptocephala var. hammerlyae Sherff accepted as Bidens leptocephala Sherff (original description)
Bidens leptocephala var. ulinei Sherff accepted as Bidens leptocephala Sherff (original description)
Cacalia pratensis Standl. accepted as Odontotrichum pratense (Standl.) Cuatrec. (original description)
Calea standleyi Steyerm. accepted as Verbesina perymenioides Sch.Bip. ex Klatt (original description)
Cosmos steyermarkii Sherff accepted as Bidens alata Melchert (original description)
Erigeron aquarius Standl. & Steyerm. (original description)
Erigeron chiriquensis Standl. (original description)
Erigeron potosinus Standl. (original description)
Eupatorium antiquorum Standl. & Steyerm. accepted as Fleischmannia antiquorum (Standl. & Steyerm.) R.M.King & H.Rob. (original description)
Eupatorium carmonis Standl. & Steyerm. accepted as Ageratina carmonis (Standl. & Steyerm.) R.M.King & H.Rob. (original description)
Eupatorium hastiferum Standl. & Steyerm. accepted as Bartlettina hastifera (Standl. & Steyerm.) R.M.King & H.Rob. (original description)
Eupatorium huehuetecum Standl. & Steyerm. accepted as Ageratina pichinchensis (Kunth) R.M.King & H.Rob. (original description)
Eupatorium ovillum Standl. & Steyerm. accepted as Ageratina ovilla (Standl. & Steyerm.) R.M.King & H.Rob. (original description)
Helenium pinetorum Standl. (original description)
Heterosperma brandegeei Sherff (original description)
Heterosperma coreocarpoides (Sherff) Sherff (original description)
Jamesianthus S.F.Blake & Sherff (original description)
Jamesianthus alabamensis S.F.Blake & Sherff (original description)
Rojasianthe Standl. & Steyerm. (original description)
Rojasianthe superba Standl. & Steyerm. (original description)
Schkuhria guatemalensis (Rydb.) Standl. & Steyerm. accepted as Schkuhria pinnata (Lam.) Kuntze ex Thell. (original description)
Schkuhria viscosissima Standl. & Steyerm. accepted as Florestina pedata (Cav.) Cass. (original description)
Senecio austin-smithii Standl. (original description)
Senecio boquetensis Standl. accepted as Talamancalia boquetensis (Standl.) H.Rob. & Cuatrec. (original description)
Solidago muelleri Standl. (original description)
Verbesina agricolarum Standl. & Steyerm. (original description)
Verbesina steyermarkii Standl. accepted as Verbesina perymenioides Sch.Bip. ex Klatt (original description)
Vernonia corae Standl. & Steyerm. accepted as Lepidonia corae (Standl. & Steyerm.) H.Rob. & V.A.Funk (original description)