分布范圍
分布在(zai)黑龍(long)江(jiang);亞(ya)洲其他地(di)區(qu)和歐(ou)洲也(ye)有。
產中(zhong)(zhong)國黑(hei)龍江、歐洲中(zhong)(zhong)部(bu)、南部(bu),亞洲北(bei)部(bu)和東南部(bu),大洋洲北(bei)部(bu)。模式標本采自(zi)意大利。
浮水草本,長(chang)(chang)(chang)6-10厘米(mi)(mi)(mi)。葉(xie)輪(lun)生(sheng)(sheng),每輪(lun)6-9片(pian),基(ji)部(bu)合(he)生(sheng)(sheng);葉(xie)柄長(chang)(chang)(chang)3-4毫(hao)(hao)米(mi)(mi)(mi),頂(ding)部(bu)具4-6條鉆(zhan)形(xing)(xing)裂(lie)條,裂(lie)條長(chang)(chang)(chang)5-7毫(hao)(hao)米(mi)(mi)(mi),葉(xie)片(pian)平展時腎狀圓(yuan)形(xing)(xing),長(chang)(chang)(chang)4-6毫(hao)(hao)米(mi)(mi)(mi),寬6-10毫(hao)(hao)米(mi)(mi)(mi),具腺毛和(he)感應毛,受刺激時兩(liang)半以中(zhong)肋(lei)為軸互相靠(kao)合(he),外圈緊貼,中(zhong)央(yang)形(xing)(xing)成(cheng)一囊體,以此捕捉昆蟲。花(hua)單生(sheng)(sheng)葉(xie)腋,具短柄;萼片(pian)5,基(ji)部(bu)合(he)生(sheng)(sheng),卵狀橢(tuo)圓(yuan)形(xing)(xing)或(huo)橢(tuo)圓(yuan)狀長(chang)(chang)(chang)圓(yuan)形(xing)(xing),長(chang)(chang)(chang)3-4毫(hao)(hao)米(mi)(mi)(mi);花(hua)瓣5,白色或(huo)淡(dan)綠(lv)色,長(chang)(chang)(chang)圓(yuan)形(xing)(xing),長(chang)(chang)(chang)3-4毫(hao)(hao)米(mi)(mi)(mi),寬約(yue)2.5毫(hao)(hao)米(mi)(mi)(mi);雄蕊5,花(hua)絲鉆(zhan)形(xing)(xing),花(hua)藥(yao)縱裂(lie);子(zi)房近(jin)球形(xing)(xing),直徑2-2.5毫(hao)(hao)米(mi)(mi)(mi),側膜胎座5,花(hua)柱(zhu)5,頂(ding)部(bu)擴大(da)多裂(lie)。果(guo)實近(jin)球形(xing)(xing),不(bu)開裂(lie);種(zhong)子(zi)由果(guo)皮腐爛(lan)而(er)出,5-8粒或(huo)更少,黑色。