![](Agaricus%20arvensis%20vs.%20Agaricus%20campestris_small.jpg)
Agaricus arvensis (left) vs. Agaricus campestris
(right)
Collected from the same lawn. Note the difference in (1) yellowing
reaction; (2) the annulus type; (3) the shape of the stem; and most
importantly (4) the odor, not easily projected through this medium...
|
![](Agaricus%20arvensis4_small.jpg) |
|