After reading a book on fungi found in NZ I have decided it is too risky to try and identify anything, even with the book in hand! There are several very dangerous types out there that look so similar to safe ones that the book even said positive ID can only be done by someone very conversant with them.
The only time I would now assume a mushroom to be safe is if it is growing in a place where I sowed spore and even then there is no guarantee it is what you sowed.
Renewable power systems - hydro, wind and solar.
Grid tie and off grid (stand alone)