Cap 30-55 mm broad, convex to broadly convex, dry, satiny, white on the margin with pale reddish brown to purplish brown, appressed fibrils in the center; flesh yellowing slightly where bruised; odor of almonds. Gills free, close, broad, pink when young, becoming dark brown in age. Stem 45-60 x 3-5 mm, cylindrical or gradually enlarged downward, satiny, white, with a white, membranous annulus nearthe apex. Spore deposit dark brown. Edibility: edible.
This small Agaricus species can be found in arcs and fairy rings snuggled in lawn grass. We have collected it on lawns at the University of Hawai'i at Hilo and on the ground of the Iolani Palace in Honolulu. Agaricus comtulus is another edible, small white Agaricus with an almond odor that grows in lawns in Hawai‘i, but it differs from A. comptuloides in having a pure white cap, lacking reddish or purplish brown fibrils in the center. Is: HA, OA.