Learn how to say Chrysanthemums correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word chrysanthemum:
any widely cultivated plant of the genus Chrysanthemum, esp C. morifolium of China, having brightly coloured showy flower heads: family Asteraceae (composites)
any other plant of the genus Chrysanthemum, such as oxeye daisy
C16: from Latin: marigold, from Greek khrusanthemon, from khrusos gold + anthemon flower