萍叶细辛属(马兜铃科) Asiasarum 苹；田字草（日本） clover fern; Marsilea; pepperwort; water clover 苹果 apple ; Malus pumila Mill. .
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N any of various temperate and tropical aquatic or marsh ferns of the genus Marsilea, having floating leaves consisting of four leaflets: family Marsileaceae 苹属水生蕨类植物
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