Dull Hygrophorus     Section

Cortinarius husseyiKey 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.

TricholomaAgaricales     Order
Fruiting body containing fibers (usually in the stalk)

Amanita onustaWhite Spored     Suborder
Spore print "light-colored": white or buff, sometimes tinged with pink or tan. Greenish and (except for the Russulales) yellow spore prints also go here
Stalk fibrous, not fracturing like a piece of chalk

Hygrophorus russulaHygrophoraceae     Family
Gills (at least) with a distinct waxy or silky feel, due to unusually long basidia
No annulus, armilla or volva
Cap often slimy
They tend to grow in cold areas, and sometimes fruit at times when it's too cold for other mushrooms
Several have an insulating slimy universal veil. This veil leaves the cap and the stalk slimy, except for the upper stalk where the gills covered it when the mushroom was a button.

Hygrocybe nitrataHygrophorus     Genus
Cap usually larger than 2" across; often viscid or slimy; usually white or dull colored
Stature usually robust
Stalk fleshy; only rarely hollow

Dull Hygrophorus     Section     

Hygrophorus olivaceoalbus


Narrow down your identification:

Hygrophorus agathosmus
Cap up to 4" across; grey; slimy
Odor strong, almondy
Gills sometimes subdecurrent
Under conifers, especially spruce and pine. And douglas fir, too, but around here that would have to be transplanted

Hygrophorus bakerensis
Cap up to 6" across; virgate; brown with yellow, olive or cinnamon shades on disk, shading to white margin; slimy when moist
Odor strong, almondy
Gills sometimes subdecurrent
Under conifers

Hygrophorus camarophyllus
Cap up to 5" across; virgate; blackish brown to tan; tacky when moist
Odor faint, of coal tar
Gills subdecurrent
Stem colored like cap, but lighter (sometimes just white)
Under conifers

Hygrophorus fuligineusHygrophorus fuligineus
Cap up to 3" across; slimy; dark blackish brown
Gills and stalk yellowish
Stalk slimy except at the top

Hygrophorus olivaceoalbusHygrophorus olivaceoalbus
Cap up to 5" across; slimy; virgate, sometimes to the point of appearing striate; broadly convex to umbonate, becoming flat; greyish brown or olive brown, becoming very dark brown at the disk
Universal veil slimy, leaving a layer of slime on the cap and all but the top of the stem
Partial veil fibrous, leaving streaks of dark brown fibrils on the cap and jagged bands of dark brown fibrils on the stalk


Hygrophorus hypothejus
  • Cap up to 3" across; slimy; greyish brown to dark olive brown when fresh, the margin changing in age to a lighter olive brown, yellowish green, buff, orange, or scarlet (!); margin sometimes virgate, according to Lincoff (1987)
  • Gills and stalk yellowish
  • Stalk slimy except at the top