Hi all well i live in south australia and was out working along a bike track on monday ,now i dont know what this plant is but pretty sure it is a weed has a yellow flower and grows to a smallish height but the bees i have never seen so many they were everywhere just about couldnt work because there were so many of them ,looked like golden italian bees but there were some darker almost black in there as well never seen so many in the time ive been working along there .