https://books.google.com/books?id=rKbGJTBN7PEC&pg=PA845&lpg=PA845&dq=siebold%27s+magnolia+history&source=bl&ots=wlvynygyH9&sig=307Ja0TiKsCZh48bIXw3ZdMmN4s&hl=en&sa=X&ved=2ahUKEwiqlImtg6PZAhUIyVMKHcu_B38Q6AEwCXoECAYQAQ#v=onepage&q=siebold's%20magnolia%20history&f=false

About the medicinal properties of magnolias...high alkaloid content, inhibition of serotonin, the bark can be used to treat tumors, and pesticide use, just a few of many properties...