convexo-

Stem cartilaginous; pileus convexo-plane, edge incurved at first; gills soon separating from stem.

In form, it is circular, convexo-concave, and resembles a watch-glass.

These are the Phænomena of thick convexo-concave Plates of Glass, which are every where of the same thickness.

Alæ latiusculæ, non longæ; anticæ apud costam rectæ, apice subrotundatæ, margine exteriore vix convexo.