Originally Posted by
neckdeep
The offcolor white with brown gills ones appear to be agarics, the same genus that contains the common commercial mushroom agaricus bisporus. This is a complex genus to pick as it is large and has a lot of overlapping physical characteristics. It contains a mix of choice edible species, mediocre but edibles, bad tasting ones and some toxics. Agaricus toxins are not fatal, just gastroenteritis. But, the real danger lies in picking the young buttons. If you can't inspect the gills, you can't safely distinguish between the agaricus and amanitas, which can grow intermingled in lawn/meadow habitat. As a result, mistakes with agaricus species can be fatal and its probably the most common fatal mistake made by inexperienced pickers. Example; i cant tell what #3 is but stay away from white body/white gilled field mushrooms.