The Correct spelling is: poinsettia
Common misspellings of the word poinsettia are:
How do you spell poinsettia?. It is not
A tropical American shrub (Euphorbia pulcherrima) that has showy, usually scarlet bracts beneath the small yellow flowerlike inflorescences.
[New Latin, after Joel Roberts Poinsett (1779â€“1851), American diplomat.]