agaricus muscarius amanita muscaria fly agaric fly bane forest fungi fungus leaf leaves mushroom orange pine plant poison red speckled spotted straw toadstool tree trees woods abalone-mushrooms abstract appearance Asian-cooking brown-oyster-mushrooms clumps clusters cream-oyster-mushrooms cuisine cultivar cultivated delicacy edible exotic-mushrooms fan-shaped flat-mushroom gilled-mushrooms hiratake mushrooms oyster-mushrooms oyster-shelf perspectives pleurotus-ostreatus saprobic straw-mushroom tamogitake texture textured textures thick thin tree-mushrooms tree-oyster