Gomphidius nigricans

Key to Gilled Mushrooms Key

This is a key to gilled mushrooms, that is, mushrooms having a definite cap with a fertile surface consisting of gills. The fruiting body usually also has a stem, although that may be lateral or absent (usually, then, the mushroom is growing from wood). You can use this key to identify mushrooms that you find.

Agaricales Order

Fruiting body containing fibers (usually in the stalk)

Gomphidiaceae Family

Spore print smoky-olive to black
Gills very decurrent, becoming smoky in age from developing spores
Cap typically slimy, or at least viscid
Under conifers only

Gomphidius Genus

Flesh (and gills, before they become colored by developing spores) white to greyish
Stalk typically yellow at the base (in one case it can be pinkish at the base)

Normally Slimy Gomphidius Section

Slimy partial veil not present in young fruiting bodies
Stem not viscid in mature fruiting bodies

Gomphidius nigricans Peck

Here are the characters that distinguish this species from the others in its group. For its more general characters, see higher up on the page.
If there's just a few words or a microscopic feature here, a more thorough description can be found above.

Diagnosis

Cap white or yellowish when young, becoming some shade of pinkish or vinaceous brown, and finally blackening altogether
Stalk base can be yellow or pink
Partial veil sparse, fibrillose; usually present on young fruiting bodies, sometimes leaving an annular zone on mature ones

Microscropic Characters

Spores 13-22 x 4.5-7 µm

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