• Witches' brooms on Berberis vulgaris are induced by a systemically infecting rust fungus, Puccinia arrhenatheri. These witches' brooms bear yellow discolored leaves on which the fungus exposes its ...

Plants appear to be able to make complex decisions. At least this is what scientists have concluded from their investigations on Barberry (Berberis vulgaris), which is able to abort its own seeds to ...