雄蕊由________、________构成。<br/> <img src="https://static.zxtiku.com/wangke/imgs/topic/c7c90e00fc3377e61a29973c4723ae77.jpg"/><img src="https://static.zxtiku.com/wangke/imgs/topic/5e953cbdc0f5f0a9ff91ba7cd2bee849.jpg"/>