The many highly-evolved plants in the gamopetalous plants area include the Fortune paulownia (Paulownia fortunei), the Morris persimmon (Diospyros morrisiana), and the Formosan ash (Fraxinus formosana), while those in the area for polypetalous plants include the Formosan michelia (Michelia compressa), the stout camphor tree (Cinnamomum kanehirai), the Chinese bayberry (Myrica rubra) and the Taiwan acacia (Acacia confusa).
合瓣花區的植物在演化上屬較進化的一群，像泡桐、山紅柿、白雞油…… 等都屬於合瓣花植物。離瓣花區則有烏心石、牛樟、楊梅、相思樹…… 等植物。