Janet Hackert, Nutrition and Health Education Specialist, Harrison County, University of Missouri Extension
Mushrooms are in season. You do not need a license to hunt them but if you want to sell them, a licensed or certified inspector must attest to their safety first.
When hunting mushrooms, it is important to be 100% sure that the mushrooms you find are safe to eat. For example, morel mushrooms vary in size and color, but one identifying factor for them is their hollow, cone- or globe-shaped head connected at the base to a hollow neck. The convolutions on the head make them look very porous… If it is a morel, as described here, it is safe to eat. However, if it is shaped and sized similarly but is NOT hollow, it is poisonous so be very careful…
For resources (including pictures) and tips on hunting for, preparing and selling mushrooms, see the full version of this article at http://missourifamilies.org/features/foodsafetyarticles/fdsfty84.htm