Quercus × rosacea

Quercus × rosacea, the hybrid oak, is a naturally occurring hybrid species of oak native to central and northern Europe. It is a hybrid between sessile oak Quercus petraea, and pedunculate oak Quercus robur, found where their ranges overlap. As a fertile hybrid, it is morphologically variable, but in general the traits are intermediate between those of the parents. A thin section of a Q. × rosacea specimen was used by artist-in-residence Tania Kovats to create a monumental work called TREE for the ceiling of the Mezzanine of the Natural History Museum, London in celebration of the bicentennial of Charles Darwin's birth....read more on Wikipedia.