nyctaginaceous

nyctaginaceous

(ˌnɪktədʒɪˈneɪʃəs)
adj
(Botany) of, relating to, or belonging to the Nyctaginaceae, a family of mostly tropical plants, including bougainvillea, having large coloured bracts surrounding each flower
[from New Latin, from Nyctago type genus, from Greek nukt-, nux night]