It occurs in deep leaf litter under spruce and fir and fruits from late summer to early fall .
Agaricus amicosus is a mushroom in the family Agaricaceae , found in high - elevation forests in the Rocky Mountains , and is particularly common in the Colorado Rockies .
Agaricus amicosus occurs in deep leaf litter under spruce and fir and fruits from late summer to early fall .
Agaricus amicosus is a mushroom in the family Agaricaceae , found in high - elevation forests in the Rocky Mountains , and is particularly common in the Colorado Rockies .