The Japanese hawthorn (sharinbai) with pink flowers a.k.a. Rhaphiolepis indica, is in the rosaceae family.
The tannin substance from the native tree is used in a 400 year-old technique for making dyes for pongo silk fabrics see this page.
Other info:
Family: Rosaceae
Japanese name: SHARINBAI
Plant type: evergreen tree
Habitat: coastal areas
Blooming season: May
Height: 2-6m
This species is utilized as a garden tree.
NATURE IN JAPAN 