Amanita onusta (Howe) Sacc.

Location: Kent Park, Delaware County, Pennsylvania, USA

Observation Notes: I found this beauty on a well-rotted log in a hardwood forest. Its cap measures 4.5cm, the stem 7cm, the flesh .5cm and the gills 1.2cm. The cap is convex with distinctive dark olive-brown warts, the largest occurring at the top. The warts are particularly striking, very angular, structured rather like crystals. The margin and narrowly attached gills are covered with white powdery veil remnants. Each gill is separated by a partial gill extending 1 to 1-1/2cm from the margin. The upper 1cm of the centrally positioned, straight stipe has a white powdery sheath, discolored to a golden brown at its lower edge. Under the sheath, the stem is creamy to light tan, darkening slightly toward the slightly enlarged base. It is covered in white powder, but handling gave the stem more of a scaled or striated appearance. The bright white mycelia are very fine and have a tenacious hold on the dirt/wood bits.
The spores are white to very pale grey. I could not measure them, but most appear nearly round or elliptical.
I didn’t notice a distinctive odor in the field, but it started to get a bit nasty 48 hours later and to leave brown moisture on the spore print paper. No chance I’ll save this one!

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