disciotis venosa: an edible morel with a cup-shaped or saucer-shaped fruiting body can be up to 20 cm wide; the fertile surface inside the cup has wrinkles radiating from the center; can be easily confused with inedible mushrooms
morel: any of various edible mushrooms of the genus Morchella having a brownish spongelike cap
concentration: strengthening the concentration (as of a solute in a mixture) by removing diluting material