Eucalyptus Leaves from the Herbarium of France come from a tree capable of resisting extreme conditions. It has rare biological features for this: its vertically oriented leaves have the same capacity to produce chlorophyll on both the underside and the top of the leaves. It also has "lignotubes" which are a pseudo-root, underground near the tree collar, allowing it to regenerate after a fire destroys its aerial parts. Finally, its seeds are enclosed in very resistant capsules... Some specimens reach 150 meters in height It is therefore understandable why it is difficult to get rid of once it has established itself somewhere Yet this is what has been chosen in a number of regions of the world, to get rid of swamps and the mosquitoes they favor. The result is quite successful, but the eucalyptuses dominate the flora, and biodiversity declines in the areas where it establishes itself. Moreover, eucalyptus forests are very flammable and gigantic fires appear in monoculture zones. These zones are moreover expanding because eucalyptus also provides a cheap raw material for paper manufacturing...