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穿叶异檐花（异檐花）TriodanisperfoliataStemsratherstifflyerect,15-60cmtall,simpleorbranched,sometimesespeciallyonangleswithspreading,bristlelikehairsofunevenlength.Leavesbroadlyovatetosuborbicular,1-2cm,shortlyhispidonveinsandmargins,basestronglycordate-clasping,marginrathershallowlycrenate-dentateorsometimesentire,apexsubacuteorrounded.Flowers1-3inaxil,sessile.Calyxlobesofupperflowers(laterones)5,rarely4,rigid,triangular-lanceolate,acuminate;lowerflowers(earlierones)smaller,with3or4shortercalyxlobes.Corollablueorwhite,rotate,8-20mmwide;corollaonearlierflowersrudimentary.Capsuleoblongtonarrowlyturbinate,4-6mm,tardilyopeningnearmiddle.Seedslenticular.Fl.andfr.Apr-Jul.2n=56.Naturalizedonmountainslopesandbystreams;100-1000m.Fujian(Chong’an,Jianning)[nativetoNorthAmerica].一年生直立草本,具乳汁。叶宽卵形,边缘具圆齿或锯齿,基部心形,抱茎;茎下部花为闭花受精，上半部花为开花受精，花五瓣，蓝紫色；蒴果。花期5~6月。原产于北美洲及中美洲，在南美洲及亚洲归化，1974年出现在福建武夷山，20世纪80年代在福建各地陆续出现，喜生于海拔100~1000米的溪旁、草地或山坡。 |
