Learn how to say Poinsettias correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word poinsettia:
a small Mexican shrub with large showy scarlet bracts surrounding the small yellow flowers, popular as a houseplant at Christmas.
Euphorbia (formerly Poinsettia) pulcherrima, family Euphorbiaceae
mid 19th century: modern Latin, named after Joel R. Poinsett (1779–1851), American diplomat and amateur botanist