Aquatic Plants
蘋
Water Shamrock
Marsilea quadrifolia
![](https://wetlandpark.gov.hk/filemanager/photos/public/Ecological/1_FreshwaterPlants/12-Marsilea_quadrifolia.jpg)
Water Shamrock is common in paddy fields and marshes. The compound leaves of this lovely little fern are composed of four leaflets. These leaflets arrange neatly in a plane resembling the Chinese character「田」(field). The leaves close in the evening as if they are having a sleep.