| Noun | 1. | genus Brassavola - genus of tropical American epiphytic or lithophytic rhizomatous orchids liliopsid genus, monocot genus - genus of flowering plants having a single cotyledon (embryonic leaf) in the seed family Orchidaceae, orchid family, Orchidaceae - enormous cosmopolitan family of perennial terrestrial or epiphytic plants with fleshy tubers or rootstocks and unusual flowers brassavola - any of various tropical American orchids with usually solitary fleshy leaves and showy white to green nocturnally fragrant blossoms solitary or in racemes of up to 7 |