Meaning – wishes of mirth and celebration.
The Aztecs called poinsettias “Cuetlaxochitle.” During the 14th – 16th century the sap was used to control fevers and the bracts (modified leaves) were used to make a reddish dye. Montezuma, the last of the Aztec kings, would have poinsThe Aztecs called poinsettias “Cuetlaxochitle.” During the 14th – 16th century the sap was used to control fevers and the bracts (modified leaves) were used to make a reddish dye. ettias brought into what now is Mexico City by caravans because poinsettias could not be grown in the high altitude.
William Prescott, a historian and horticulturist, was asked to give Euphorbia pulcherrima a new name as it became more popular. At that time Mr. Prescott had just published a book called the Conquest of Mexico in which he detailed Joel Poinsett’s discovery of the plant. So, Prescott named the plant the poinsettia in honor of Joel Poinsett’s discovery. During his stay in Mexico he wandered the countryside looking for new plant species. In 1828 he found a beautiful shrub with large red flowers growing next to a road. He took cuttings from the plant and brought them back to his greenhouse in South Carolina . Today, the poinsettia is a popular plant to give for the holidays
Source: http://www.urbanext.uiuc.edu