The Proctor's Rowan (Sorbus x proctoris) is a recently discovered tree.
The tree is a new hybrid between Rowan and Sichuan Rowan.
It is named after Dr Michael Proctor, an eminent senior botanist of Exeter University, for his excellent work on British Whitebeams.
Only one tree has been found in the wild in the Avon Gorge, where it is in the middle of a nature conservation dilemma. As one of its parents is a garden tree from China, there is the potential for genes of the Sichuan Rowan to spread into the native rowan population in the Avon Gorge.
To prevent this happening, one option would be to destroy/remove the only example of this tree.