| 1. | Flowers solitary and terminal , white , 10 - 14 cm in diam . , sessile ; bracts and sepals leathery , orbicular , covered with grayish silky hairs outside ; petals 8 , broadly obovate , 5 - 7 cm long , glabrous , basal 1 . 5 cm connate ; stamens in many whorls , 2 . 5 cm long , distinct , glabrous ; ovary hairy , 5 - locular , styles 2 cm long , apex 5 - lobed 花白色,单生于枝顶,直径10 - 14厘米,无柄;苞片及萼片圆形,革质,外被灰色绢毛;花瓣8 ,阔倒卵形,长5 - 7厘米,无毛,基部连生约1 . 5厘米;雄蕊多轮,长2 . 5厘米,离生,无毛;子房有毛, 5室,花柱长2厘米,先端5浅裂。 |