Sorbus alnifolia

About

Alniaria alnifolia, also called alder-leafed whitebeam or Korean whitebeam, is a species of whitebeam native to eastern Asia in eastern and northern China, Taiwan, Korea and Japan. Long treated in a wide interpretation of Sorbus, it was first moved to Alniaria in 2018, and more recently with the other species in this genus merged into Micromeles in 2023; this latest revision has now been accepted by the Plants of the World Online database.

Summary from Wikipedia