Calvatia Craniformis
Calvatia craniformisBrain-shaped Calvatia
Peridium or Pouch - Very large, obovoid or top--shaped, depressed above.
Bark or Outer Coat - Smooth, very thin and fragile, easily peeling off. Pallid or greyish, often with a reddish tinge; often wrinkling to resemble somewhat the surface of the brain, whence its name craniformis.
Inner Coat - Thin, ochreous to bright brown, velvety, extremely fragile. The upper part breaks into fragments.
Subgleba - Occupies half the peridium; cup-shaped above, persistent.
Spores - Greenish yellow, then olivaceous. Globose, even, with minute pedicel.
Threads - Long.
Habitat - On ground in woods.