Japanese Poplar / ヤナギ科ヤマナラシ属 /日本

A toothpick tree
A tree familiar with daily necessities such as toothpicks and match rods. In ancient China there was a record that biting a branch of a tree of a willow and poking a tooth with a branch to save the pain of the tooth, it became to be used as a toothpick. Because it is a material that is strong in elasticity and absorbs shock, it was used for Maruki ship, boat edge, ammunition box. When this tree is made into ink, light and soft charcoal is made and it is used as raw material for black powder.