Yellow flowers

IMG_9467This is possibly the flowers to a plant I ate as a three year old. It grew in my mother´s parents’ garden. The leaves are rhubarb like and of course my parents panicked and took me to hospital. My father´s mother was a school teacher so she looked it up afterwards and it was a plant that was originally used as fodder in China where it comes from and would had done me no harm. That is if this is the same plant. I need to find my flora to look it up and see what the name of the flower is. I have seen in it in the park where this picture is taken and in a garden nearby. I share this with Today´s Flowers.