The =cap= is convex, then plane, and sometimes depressed at the center or umbilicate.
The =pileus= is convex, then plane, tan or leather colored, darker when dry.
The =pileus= is convex, sometimes slightly umbonate, then plane, and in age somewhat depressed.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "then plane" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
