睡蓮苗 (29)
睡蓮(lian)(學名(ming):NymphaeaL.),多年(nian)生(sheng)(sheng)(sheng)水(shui)(shui)(shui)生(sheng)(sheng)(sheng)草本;根狀(zhuang)莖肥厚。葉(xie)柄圓(yuan)(yuan)柱(zhu)形,細長。葉(xie)橢圓(yuan)(yuan)形,浮生(sheng)(sheng)(sheng)于(yu)水(shui)(shui)(shui)面(mian),全緣,葉(xie)基心形,葉(xie)表面(mian)濃綠(lv),背面(mian)暗紫。葉(xie)二型(xing):浮水(shui)(shui)(shui)葉(xie)圓(yuan)(yuan)形或卵形,基部(bu)具彎缺(que),心形或箭形,常無(wu)出水(shui)(shui)(shui)葉(xie);沉水(shui)(shui)(shui)葉(xie)薄膜質(zhi),脆弱(ruo)。花(hua)(hua)(hua)單生(sheng)(sheng)(sheng),浮于(yu)或挺出水(shui)(shui)(shui)面(mian);花(hua)(hua)(hua)萼四枚,綠(lv)色(se)(se);花(hua)(hua)(hua)瓣通常八片。果實倒(dao)卵形,長約3厘米(mi)。花(hua)(hua)(hua)大形、美麗,浮在(zai)或高出水(shui)(shui)(shui)面(mian),白天開花(hua)(hua)(hua)夜間閉合;萼片近離生(sheng)(sheng)(sheng);花(hua)(hua)(hua)瓣白色(se)(se)、藍色(se)(se)、黃色(se)(se)或粉紅色(se)(se),成(cheng)多輪,有(you)時內(nei)(nei)輪漸變成(cheng)雄蕊;藥隔(ge)有(you)或無(wu)附屬(shu)物(wu);心皮(pi)環狀(zhuang),貼生(sheng)(sheng)(sheng)且半沉沒在(zai)肉質(zhi)杯(bei)狀(zhuang)花(hua)(hua)(hua)托(tuo),且在(zai)下部(bu)與(yu)其(qi)部(bu)分地愈合,上部(bu)延伸成(cheng)花(hua)(hua)(hua)柱(zhu),柱(zhu)頭成(cheng)凹(ao)入(ru)柱(zhu)頭盤,胚珠倒(dao)生(sheng)(sheng)(sheng),垂生(sheng)(sheng)(sheng)在(zai)子(zi)房內(nei)(nei)壁。漿果海綿質(zhi),不規則開裂,在(zai)水(shui)(shui)(shui)面(mian)下成(cheng)熟;種子(zi)堅(jian)硬(ying),為(wei)膠質(zhi)物(wu)包裹,有(you)肉質(zhi)杯(bei)狀(zhuang)假種皮(pi),胚小(xiao),有(you)少(shao)量內(nei)(nei)胚乳及豐富(fu)外胚乳。