Gyromitra infula (Schaeff. ex Fr.) Quél. Cap 3-10cm across, saddle-shaped or 3-lobed, with an incurved margin; reddish brown to dark brown; wrinkled to convoluted. Stem 10-60 x 20mm, hollow, sometimes irregular; whitish to buff. Flesh brittle. Spores ellipsoid, smooth, containing 2 large oil drops, 19-23 x 7-8µ. Habitat singly or scattered on humus and rotting wood or debris. Common. Found widely distributed throughout North America. Season July-October (November-April in the West). Poisonous.