Critonia portoricensis (Urb.) Britton & P.Wilson (original description)
Eupatorium dolicholepis (Urb.) Britton accepted as Koanophyllon dolicholepis (Urb.) R.M.King & H.Rob. (original description)
Leptilon chinense (Jacq.) Britton accepted as Conyza laevigata (Rich.) Pruski (original description)
Melanthera calcicola Britton accepted as Melanthera nivea (L.) Small (original description)
Melanthera confusa Britton accepted as Melanthera nivea (L.) Small (original description)
Osmia borinquensis Britton accepted as Chromolaena borinquensis (Britton) R.M.King & H.Rob. (original description)
Osmia corymbosa (Aubl.) Britton & P.Wilson accepted as Chromolaena corymbosa (Aubl.) R.M.King & H.Rob. (original description)
Osmia corymbosa (Aubl.) Britton (original description)
Osmia geraniifolia Britton (original description)
Osmia geraniifolia (Urb.) Britton & P.Wilson accepted as Chromolaena geranifolia (Urb.) R.M.King & H.Rob. (original description)
Osmia sinuata (Lam.) Britton & P.Wilson accepted as Chromolaena sinuata (Lam.) R.M.King & H.Rob. (original description)