This feature relates to the overall shape of the pileus as viewed side-on or in cross section. Ignore any modifications of the pileus centre (see Pileus centre shape).

This feature should be assessed using fruit-bodies that are fully mature and expanded but not too old. On young fruit-bodies the mature shape may not have developed properly; old fruit-bodies may become irregular or contorted.

Fruit-bodies may vary considerably in shape between specimens. Choose an average shape for this feature.

Choose this state if: the pileus is much taller than broad. The height of the pileus is at least 1.5 times the diameter (and often more). The sides may be more or less parallel with a flat apex (cylindrical) or the sides may curve to a rounded apex (parabolic).