![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiQFV2RYRJgIvGvLWb8UQEdlntncmWmVB4pt948p3ahLtoEk7yqdbQzvpW5Rbg3yGPaXrlhLMFMIj0QBM4HIRBB2yuatcr0NyaekvWIATuUg-J17X9_N5Wv_Gl9o5XiPCDjvGy9Fxr0afg/s400/Hedwigia.jpg)
This plant grows in my lily pond. It has little yellow flowers at the edge of the circle. It looks like a mathematician designed this plant. As a jigsaw puzzle it could make a few puzzlers go crazy. I have tried to grow this plant for 20 years. And just this year I seem to be able to keep it alive.