Eupatorium canescens Ortega accepted as Brickellia eupatorioides var. eupatorioides (L.) (original description)
Eupatorium lucidum Ortega accepted as Ageratina lucida (Ortega) R.M.King & H.Rob. (original description)
Helianthus tetrapterus Ortega accepted as Verbesina tetraptera (Ortega) A.Gray (original description)
Helianthus triqueter Ortega accepted as Viguiera dentata (Cav.) Spreng. (original description)
Pascalia Ortega (original description)
Pascalia glauca Ortega accepted as Wedelia glauca (Ortega) Hoffm. ex Hicken (original description)
Pectis multifida Ortega (original description)
Tagetes lunulata Ortega (original description)
Villanova Ortega accepted as Parthenium L. (original description)
Villanova bipinnatifida Ortega accepted as Parthenium hysterophorus L. (original description)