Environmentalists are sometimes disparagingly called ‘tree-huggers’, but that would be a bad idea in the case of the Manchineel tree (Hippomane mancinella L., family Euphorbiaceae). In fact, any form of contact with any part of this tree is extremely dangerous due to the potent toxin in the wood, bark, leaves, and fruit.
The tree is up to 15m (50 feet) tall, with lush leaves. Its fruit looks like and tastes like apples, but the sweet flavour quickly gives way to an intensifying burning feeling that will make swallowing almost impossible. One article warned that eating enough of the fruit would cause one to “suffer about the same fate as someone exposed to nerve gas. … This tree can, and has, killed people.”