Florissantia quilchenensis
Middle Eocene
Klondike Mountain Formation
Republic
Washington USA.

Florissantia quilchenensis is an extinct species of flowering plant known from fossil deposits dating to the Eocene Epoch, approximately 56–34 million years ago. The species name quilchenensis refers to the Quilchena fossil locality in British Columbia, a site famous for preserving exceptionally detailed fossil plants, insects, and freshwater organisms.
23mm on 97mm slab