The center in some specimens is more prominent than in others, giving what is called an umbonate cap.
I have found it distinctly umbilicate and quiteumbonate in the same patch.
Pileus said to be gibbous, but not umbonate nor becoming rufescent.
The pileus is often umbonate or gibbous, and the center is often darker than the margin.
The =pileus= is convex to expanded, sometimes broadly umbonate in age, and usually with radiating wrinkles extending irregularly.
The cap in this species is usually a mouse-gray, sometimes slaty gray or brownish, generally umbonate in the center and distinctly striated on the margin.
The Marasmius urens as described by European authors has a pale buff cap, not umbonate but flat, and at length depressed in the centre, from one to two inches across.
The pileus is at first convex and umbonate and as the plant advances in age the margin becomes elevated until the plant becomes funnel-shaped.
The umbonate pileus and the nearly free, broad, gray gills will distinguish it.
Differs from the former in dark stem and uneven pileus, differs from the latter in being subviscid, with even stem, and pileus not umbonate and much more irregular, and differs from both in subcostate gills.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "umbonate" in a variety of sentences. We hope that you will now be able to make sentences using this word.
