Plumeria rubra L., P. obtusa L., and hybrids. Apocynaceae (dogbane) family. The names acuminata, acutifolia, and lutea are botanical variety names that have been incorrectly used to represent species names.
Common names: plumeria, frangipani, melia (Hawaiian), temple tree, and many named cultivars.
For more info, download Plumeria PDF from College of Tropical Agriculture & Human Resources, University of Hawaii at Manoa