A drug that is highly effective in treating many types of infection can, at present, be obtained only from the bark of the ibora, a tree that is quite rare in the wild  It takes the bark of 5, 000 trees to make one kilogram of the drug
It follows, ttherefore, that continued production of the drug must inevitably lead to the ibora's extinction
The ibora can be propagated from cuttings and grown under cultivation.