This mushroom occurs in late summer and fall--not in the spring, when other species of Gyromitra can be found. Its broadly lobed cap is usually pinched into two lobes, creating a saddle-shaped appearance. Its color is variable.
occasionally nearly cup-shaped when young, but soon becoming lobed with two prominently raised lobes; bald; loosely wrinkled but usually not not brainlike; varies in color (tan to yellowish brown to reddish brown to dark brown); undersurface whitish to brownish, finely dusted, sometimes ingrown with stem where contact occurs. Stem
equal to enlarged at the base, stuffed or hollow, round to compressed, sometimes with a longitudinal fold, surface glabrous to subpubescent, colored like the cap or lighter.
The deadly poisonous Gyromitra esculenta reminds of this mushroom.
on the MushroomExpert.Com Web site.