I'm sure the Council didn't intend their list to be used as a meal planner - or as the forager's version of an internet grocery shopping site - but it certainly lends itself to that, in combination with Plants for a Future. I can look up some of the weeds that I'm likely to find round Wellington (or have already seen), then do a search for their scientific names (or common names) at Plants for a Future, and be presented with a range of references to their uses. From there, I can follow these leads further through other websites or books.
I think most NZ regional councils helpfully put up lists of local invasive plants on the net. Mind, you there are one or two interesting ethical and practical dilemmas associated with harvesting invasive weeds! I'll post my thoughts on those another time.
When it comes to identifying and foraging for NZ native plants, I've found books a better starting point than the internet. I've also been thinking about the ethical issues involved with natives, and have stumbled on this cautionary article from the Rodale Institute in the US, reminding me of just how much I need to think about and learn if I want to do this properly.