Cap irregularly lobed and highly convoluted, extending outward from the similarly convoluted stem. It is occasionally loosely saddle-shaped, with a colour ranging from black to very dark brown. The surface is smooth but wrinkled. The flesh is thin, brittle, and chambered, with a colour that ranges from whitish to greyish.Stem sometimes whitish when young, but soon turning greyish to dark grey, it becomes deeply and ornately ribbed and pocketed. The ribs are rounded, though they can occasionally be sharp and double-edged. Spore print white.
Microscopic Features: Spores are ellipsoidal, measuring 15 - 19 x 10 - 13 μm, and hyaline (transparent).
Helvella lacunosa on the www.first-nature.com web site.
Helvella lacunosa on the MushroomExpert.Com Web site.
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