[1] n styl m o t-size:10.5pt; font-family:宋体;mso-ascii-font-family:Arial;mso-hansi-font-family:Arial; mso-bidi-font-family:Arial;color:#333333;background:white;mso-font-kerning: 0pt>,有花5-15朵,花序下面具一短柄的小叶;花两性,直径1.5-2厘米;萼片卵形,比副萼片稍长,副萼片椭圆披针形,全缘,稀深2裂,果时扩大;花瓣白色,近圆形或倒卵椭圆形,基部具不显的爪;雄蕊20枚,不等长;雌蕊**多。