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 more or less flat or shallowly concave (like a saucer).

If the middle of the pileus is flat but the edges are curved downwards, choose Pileus shape: rounded.