The two rows of landscape trees after entering the west gate (new gate) of Xiamen University are fake betel nuts, the scientific name is Archontophoenix alexandrae, also known as Alexander Coconut, which is a kind of fake betel nuts in Palmae. Originated in Australia, it is beautiful in appearance and ranks as the king of palm plants with the sunflower queen. China has introduced 100 years, mainly distributed in southern provinces (including Fujian, Taiwan Province, Guangdong, Hainan, Guangxi, Yunnan and other provinces). Areca catechu is a common ornamental tree in southern street trees, courtyards and garden scenic spots because of its tall and majestic plants.