poinsettia (n.)youdaoicibaDictYouDict[poinsettia 词源字典]
from the genus name (1836), Modern Latin, in recognition of Joel R. Poinsett (1779-1851), U.S. ambassador to Mexico, who is said to have brought the plant to the attention of botanists, + abstract noun ending -ia.[poinsettia etymology, poinsettia origin, 英语词源]