epiphyllum

 
Pronunciation: /ˌɛpɪˈfɪləm/

noun (plural epiphyllums)

  • a cactus with flattened stems and large, fragrant red or yellow flowers.
    • Genus Epiphyllum, family Cactaceae: several species

Origin:

modern Latin, from epi- 'upon' + Greek phullon 'leaf'