Australia is famous, among other things, for venomous animals. Its plants, it turns out, are just as hostile. Now, researchers at the University of Queensland have isolated “neurotoxic peptides from the venom of the giant Australian stinging tree,” as they titled their paper. While the tree’s venomous effects were no secret – the authors wrote that it is known for its “remarkably persistent and painful stings upon contact,” which can produce pain flares for weeks – the effect had been attributed to small molecules.