Sporangia plane, umbilicate, attached to the wall by an elastic cord.
Umbilicate: Having a central pit or depression (Fig. 143, f).
Umbilicate, depressed in the centre, like the ends of an apple; with a navel.
The latter is usually very short, almost completely concealed in the concavity of the umbilicate sporangium.
Sometimes they are umbilicate below, so that a vertical section would be obcordate.
In some of the species of Omphalia the pileus is not umbilicate, but here the gills are plainly decurrent.
The pileus is thin, umbilicate or with the center darker, the surface hairy or scaly, and the margin at first incurved.
It is more erect, the branching more open, and the caps at the ends of the branches are more or less circular and umbilicate.
The cap is convex, then plane, and sometimes depressed at the center or umbilicate.
It is minutely velvety on the upper surface, reddish brown or cinnamon in color, expanded or umbilicate to nearly funnel-shaped.