These oysters are from Gilker Park Roberts Creek, Sunshine Coast, BC, Canada.
Every spring McDowell runs Gilker Park with her dog, a cloth bag and a pocket knife just before dinner time. She slices oyster mushrooms from the plentiful bounty along the park trails. And by the time her run is finished she’s ready to go home with a bag of fresh oyster mushrooms.
About the Oyster Mushroom (Pleurotus)
The oyster mushroom (Pleurotus ostreatus) is widespread in many temperate and subtropical forests throughout the world, although it is absent from the Pacific Northwest of North America, being replaced by P. pulmonarius and P. populinus. It is a saprotroph that acts as a primary decomposer of wood, especially deciduous trees, and beech trees in particular. It is a white-rot wood-decay fungus.
The oyster mushroom is one of the few known carnivorous mushrooms. Its mycelia can kill and digest nematodes, which is believed to be a way in which the mushroom obtains nitrogen.
More information: Pleurotus: Wikipedia