どちらも日本和紙の原料とされていました。今では、野生化したカジノキが、あちこちの山野で見られます。
The trees of "Broussonetia papyrifera" and "Broussonetia kazinoki" resemble each other. So there is a confusion in a scientific name of "Broussonetia kazinoki". The letter string of "kazinoki" means "Broussonetia papyrifera" in Japanese.
Both were the raw material of the Japanese paper. Now, "Broussonetia papyrifera" became a wilding and is seen at many places of hill and dale.
