Sorbus minima

About

Hedlundia minima, commonly known as the lesser whitebeam or least whitebeam, is a deciduous shrub in the rose family Rosaceae. It belongs to the genus Hedlundia, which includes species that have arisen from a hybridisation between members of the genus Sorbus (rowans) and members of genus Aria (whitebeams). It is an apomictic microspecies that reproduces only asexually, and is endemic to Wales.

Summary from Wikipedia