Cyclocybe erebia
Cyclocybe erebia, also known as the dark fieldcap, or sometimes Agrocybe erebia, is a species of brown-spored agaric with a wide distribution.
Taxonomy
Cyclocybe erebia was once considered to be in the genus Agrocybe, but recent DNA sequencing has shown that it is not, instead placing it in Cyclocybe.Description
The color of the cap can range from light to dark brown. When wet, it is viscid. The cap can range from in diameter; younger caps are very round. The edge of the cap is often frilled or wrinkly, and more lightly colored. Decurrent gills are present underneath the cap. They are whitish at first, but they become brown with maturity. The stipe is whitish, browning with age, long, and thick. When young, a partial veil is present, covering the hymenium. It later separates from the margin, sometimes leaving behind a white ring.The whitish to brown flesh does not stain. The spore print is brown.
Microscopic features
The spores measure 10 μm–15 μm × 5 μm–7 μm, and are ellipsoid or subellipsoid, often with a snout-like end, and are brown or yellow-brown.The basidia are 2-sterigmate.