Fraxinus mandshurica var. japonica - Japanese, or Manchurian ash
The Japanese ash is a form of Manchurian ash growing naturally on the northern Japanese islands of Honshu and Hokkaido, as well as on Sakhalin Island. On the cool mountain slopes it tends to concentrate in moist sites at the edges of mires or along rivers, with conifer forest dominating drier sites. Highly valued for the attractive patterning of its timber, the Japanese ash has become rather rare in the wild because of over-exploitation.