Bart, hope your friend got out and you get some good news on him.
That is a weird coincidence. You get into it with poisonwood and yesterday I found this Oro tree while looking for a book.
"For a long time in Europe were sure that somewhere in the desert (Islands, mountains) grows the dreadful tree Oro, exuding a deadly poison.
The source of this information was a Dutch botanist Rumpf. Traveling to Indonesia, he asked the natives about which poisonous plants they use for their arrows. The natives told "the white man" with three boxes, and the result was this report:
"Underneath the tree do not grow any other trees, nor bushes, nor grass, not only under his crown, but even at a distance of stone's throw: the soil is barren, dark and charred as if. The poisonous tree is that sits on the branches of a bird, having swallowed the poisoned air, drugged fall to the ground and die, and their feathers strew the soil."
Actually nastoyashiy ANCHAR is not so poisonous. Its milky juice is really dipped arrows, and a long contact with the leaves can cause burns, but animals and birds can safely climb the trunk and sit in the branches. Poison is really dangerous only if it enters the blood or inside."
But there was also this tree which I bet you have seen.
The Mancinella or Manchineel tree.
View attachment 1750293
https://www.atlasobscura.com/articl...ven-inhale-the-air-around-the-manchineel-tree
The arrow that killed Ponce De Leon was said to be tipped with sap from the Manchineel tree.