This is a beautiful sheet of 4 stamps, issued by Guinea in 2011, displaying mushrooms. Featured fungus shown includes the Latticed Basket Stinkhorn, Slippery Jill, False Green-Spored Parasol, Honey Mushroom, and the Smooth Chanterelle. Also on the sheet are famous German botanist A.W. Eichler, founder of the science of plant pathology Miles Joseph Berkeley, the father of modern taxonomy & ecology Carl Linnaeus, and French botany expert Joseph Pitton de Tournefort. The sheet is Post Office fresh, mint never hinged, and F/VF.