How can you tell if a mushroom is poisonous?
Memorize the features of the local poisonous mushrooms, especially Amanita, which has an umbrella-like cap, white gills, rings on the stem and a cup-like rounded base which is often under the soil. This is the most common poisonous mushrooms.
it's black on the bottom
As a whole, a colorful and showy patterned mushroom has poison in it. Just like a saying, 'Every rose has its thorn'.
Are you talkin about real mushrooms or mario mushrooms? Well in mario they should be purple with white spots thats all i can help you with lol.
If you plan to eat them, you better know for sure, they can be deadly. I suggest you contact someone who is an expert. Be safe