Okay, I'll add poppy, zinnia and woman in a red dress made of a poppy icons. I'll try to make them as soon as possible :)
Regarding the name of the flowers, most of them are just fantasy without names. Others are assembled from parts of existing ones. And only a few exist, for example: a sunflower, a water lily, a venus flytrap or a maple leaf.
I hope my answer helped you! :D