The Trooping Crumble Cap is a distinctive Ink Cap mushroom that can be found in soil or on decomposing wood. It is widespread and can be found in spring, summer, and fall.

This mushroom is small, is quite fragile, does not turn into black ink (unlike most other Ink Caps), and is generally found in large groups (trooping), generally more so than the specimen photographed here.

The cap is pleated/grooved from the margin almost to the center.

The gills start white when young, becoming gray, then becoming black with maturity. The spore print is black. Attachments range from free, attached, or pulling away from the stem.

September 7th, 2023 Field Notes

• Trooping among woodland duff/soil in woodland.
• Caps gray, pleated with scalloped margin, and golden brown center.
• Gill Attachment: adnate
• Smell: not distinctive.
• Taste: not distinctive to mild.
• KOH: darkening central portion of pileipellis.
• Ammonia: negative
• Gills hydrophobic.