Any of several South American woody shrubs or vines of the genus Bougainvillea having groups of three petallike,showy,variously colored bracts attached to the flowers.

• 九重葛，一种九重葛属南美洲木本灌本或藤本植物，三片花瓣形艳丽而颜色丰富的花苞附在花上。