The best place to buy fresh wild mushrooms is locally such as the farmers market or a specialty grocer. When that's not possible, though, here are some online mushroom sellers that provide quality products. Some mushrooms are highly toxic, so whether it's your local vendor at a farmers market or a box store, always be sure of the seller's credentials when buying wild mushrooms. If you're unsure, ask for references. Wild mushrooms are also seasonal which affects both their availability and price.
Fresh wild mushrooms from Oregon and California: Morels, Chanterelles, Lobster, Yellowfoot, Truffles, and lots of other varieties. They also carry a wide selection of dried mushrooms.
For years, Marx Foods has been a high-end restaurant distributor but in 2007 they began selling directly to consumers. Lucky for us because Marx Foods has some wonderful products: game meat, seafood, wild produce, and much more. For wild mushrooms they have morels, chanterelles, hen of the woods, enoki, and more.
This Canadian company has a large selection of fresh wild mushrooms from the west coast of Canada and the United States: morels, chanterelles, hedgehog, bear's tooth, trumpet, lobster, and more.
Local Harvest is a way for small farmers to sell directly to consumers. The selection is not the largest, but you can find here a few sellers of wild mushrooms.