Argill Milkcap (Lactarius argillaceifolius)
Habitat: Pine duff and grass near Lakeville, MN
Cap: Smooth, clay-colored to tan
Gills: Cream, close, exuding white latex that yellows on exposure
Stem: Firm, hollowing with age
Spore print (expected): Pale yellowish buff
The clay-colored milkcap (Lactarius argillaceifolius) matched both size and color from the Audubon description. The cut stem revealed yellow flesh. (/gallery/fungi/mushrooms/assets/slimespike/E21A6382.jpg)
Unfortunately, the spore print (gray/black) did not match. This is actually a Blackening Slimespike.
References:
- National Audubon Society: Mushrooms of North America (April 2023)