Mycena abramsii

Species occurring on organic debris or directly on fallen logs of various trees, with a conical, striate, greyish-brown pileus 1–3.5 cm across, adnate lamellae, and a cylindrical, hollow stipe that is dark brown below and paler above, with a nitrous odour and sweet taste.

Hyphae of the pileipellis cylindrical, 2–4 µm wide, with abundant simple or branched excrescences up to 10 µm long, these excrescences (diverticula) being 1–2 µm wide.

Cheilocystidia fusiform to sublageniform, occasionally with an elongated neck, measuring 30–45 µm long by 12–16 µm wide.

Basidia clavate, 25–35 µm long by 8–9 µm wide, with basal clamps, 4-spored.

Spores ellipsoidal, smooth, hyaline, thin-walled, measuring 8–10.5 µm long by 5–6.5 µm wide, with an inconspicuous eccentric apiculus at one end, granular contents of small oil droplets inside, amyloid in Melzer's reagent.