Just reading up on your weeds.
!!Chamber Bitter Phyllanthus urinaria is a discovery for me. I have always wondered what that weed was in my garden.
I have never been able to identify it but it can just take over.
And yes, it is introduced and widespread here.
Interestingly it has been tested to see if it impacts on hepatitis b. See article that follows, if it is understandable.
http://link.springer.com/artic...
