A. gemmata is creamy to plae yellow, golden-yellow, or buff, often slightly darker at the center. Its surface is slightly viscid when moist. The whitish universal veil will entirely cover the youngest mushrooms, form whitish spots or warts on mature mushrooms, and may eventually wash or wear off with age. The stalk is dry white or tinged yellowish.
Gills are free to slightly attached, crowded, broad to narrow, and white.
Spore Print is white. On the ground, under conifers, particularly Doublas fir. Solitary, scattered or in groups in woods or along forested paths and roads. Coastal California they occur in mixed woods and under live oak shortly after the first fall rains. Pacific Northwest, Spring, Summer and Fall.