In the forest of central Africa, there is a kind of hard and prickly tree, which is called "Arrow Tree" by local people. Arrow Tree is highly toxic, and if people and animals are stabbed by it, they will die immediately.

The white latex in the bark of Jatropha curcas in Xishuangbanna, China is extremely toxic and has pungent leaves. If you fall into the human eye by mistake, it will immediately make people blind; People can stop their heartbeat in a quarter of an hour after eating it. Its original name is "Jia Du", which is translated by Chinese botanists as "seeing blood and sealing the throat", which is worthy of the name.

There are arrows and guns. When the fruit of American sandbox tree is ripe, its seeds can fly more than ten meters away with a loud noise. Cucumber, which grows in Africa and the Caucasus of the former Soviet Union, has a fruit like a cucumber. When it matures and falls to the ground, the slurry and seeds in it will "bang" and spray like a gun to 10 meters away, so it is called "iron cannon melon". The mucus of melon spray is poisonous, so it can't drip into eyes.

In the tropical forests of South America, there is a kind of plant called "puffball fungus", which looks like a mine, each weighing 10 kilograms. If you accidentally step on it or touch it, it will make a "bang" noise like a mine explosion, and at the same time, it will emit a strong irritating smell, which will make people sneeze constantly, with tears running down and eyes stinging. People call it "plant mine".