Ranunculus

Chin up #buttercup . Studies shows how the buttercup’s exceptionally bright appearance is a result of a special feature of the petal structure. The epidermal layer of cells has not one but two extremely flat surfaces from which light is reflected. Reflection of light by the smooth surface of the cells and by the air layer effectively doubles the gloss of the petal, explaining why buttercups are so much better at reflecting light under your chin than any other flower.

Interesting maybe that is why my red one photographs pink. I thought it was just my phones camera