genus Gyromitra - a genus of fungi of the family Helvellaceae with a fertile portion that is tan to brownbeefsteak morel, brain mushroom, Gyromitra esculenta - a poisonous gyromitra; the surface of the fertile body is smooth at first and becomes progressively undulating and wrinkled (but never truly pitted); color varies from dull yellow to brown Gyromitra gigas - a gyromitra with a large irregular stalk and fertile part that is yellow to brown and wrinkled; has early fruiting time |