睡蓮苗 (28)
睡蓮(lian)(學名:NymphaeaL.),多年(nian)生水(shui)生草(cao)本;根狀莖肥(fei)厚。葉(xie)(xie)(xie)柄圓柱(zhu)形(xing)(xing),細長(chang)。葉(xie)(xie)(xie)橢圓形(xing)(xing),浮生于水(shui)面(mian),全緣,葉(xie)(xie)(xie)基心(xin)形(xing)(xing),葉(xie)(xie)(xie)表面(mian)濃(nong)綠(lv),背(bei)面(mian)暗紫。葉(xie)(xie)(xie)二型:浮水(shui)葉(xie)(xie)(xie)圓形(xing)(xing)或(huo)卵形(xing)(xing),基部具彎缺,心(xin)形(xing)(xing)或(huo)箭(jian)形(xing)(xing),常無出(chu)水(shui)葉(xie)(xie)(xie);沉水(shui)葉(xie)(xie)(xie)薄膜質(zhi)(zhi),脆弱。花(hua)單生,浮于或(huo)挺出(chu)水(shui)面(mian);花(hua)萼(e)四(si)枚,綠(lv)色;花(hua)瓣通常八片。果實(shi)倒卵形(xing)(xing),長(chang)約3厘米。花(hua)大(da)形(xing)(xing)、美麗,浮在或(huo)高(gao)出(chu)水(shui)面(mian),白天開(kai)(kai)花(hua)夜(ye)間閉合;萼(e)片近離生;花(hua)瓣白色、藍(lan)色、黃色或(huo)粉紅(hong)色,成(cheng)多輪(lun),有時內輪(lun)漸(jian)變(bian)成(cheng)雄蕊;藥隔有或(huo)無附屬物;心(xin)皮環狀,貼生且半沉沒在肉(rou)質(zhi)(zhi)杯狀花(hua)托,且在下部與其部分地愈合,上部延伸(shen)成(cheng)花(hua)柱(zhu),柱(zhu)頭成(cheng)凹入柱(zhu)頭盤,胚(pei)珠(zhu)倒生,垂生在子(zi)房內壁(bi)。漿果海綿質(zhi)(zhi),不(bu)規(gui)則(ze)開(kai)(kai)裂(lie),在水(shui)面(mian)下成(cheng)熟;種子(zi)堅硬,為(wei)膠質(zhi)(zhi)物包裹,有肉(rou)質(zhi)(zhi)杯狀假(jia)種皮,胚(pei)小(xiao),有少量內胚(pei)乳及(ji)豐富外胚(pei)乳。