Prestonia speciosa Donn. Sm. Prestonia speciosa Donn. Sm. in Bot. Gaz. 27: 435. 1899 sec. Juárez-Jaimes & al. 2007=Prestonia grandiflora L.O. Williams in Fieldiana, Bot. 31(18): 402–403. 1968 syn. sec. The Plant List 2013