They are apt to be crenated when the film has dried too slowly.
In the Momots the beak is long, robust, and crenated at the edge.
Of these latter some will be seen to have lost their circular outline, and to have become jagged or crenated.
They are however nothing but contraction forms of the poikilocytes, as the crenated are of the normal corpuscles.
The spores are ovoid, ...