Obbata means shaped like an obba or beaker.
The pileus is somewhat membranaceous, umbilicate, then rather deeply depressed, smooth, inclined to be hygrophanous, sooty-brown, margin at length striate.
The gills are decurrent, distant, grayish-white, pruinose.
The stem is hollow, grayish-brown, smooth, equal, rather tough.
I found plants growing on Cemetery Hill under pine trees. I had some trouble to identify the species until Prof. Atkinson helped me out. August to September.
Clitocybe gilva. Pers.
The Yellow Clitocybe. Edible.
Gilva means pale yellow or reddish yellow.
The pileus is two to four inches broad, fleshy, compact, soon depressed and wavy, smooth, moist, dingy ocher, flesh same color, sometimes spotted, margin involute.
The gills are decurrent, closely crowded, thin, sometimes branched, narrow but broader in the middle, ochraceous yellow.