Summary:
Subgenus Telamonia Section Bovini Subsection Bovini. Features include a hygrophanous, grayish brown, somewhat fibrillose cap (brown to dark brown in dried collections), distant gills, growth with spruce, and fairly large and narrowly elliptic, coarsely verrucose spores. Cortinarius oulankaensis is part of the Cortinarius bovinus group.

Cap:
4-10cm across, hemispheric, then low convex to almost flat with low broad umbo; hygrophanous, "surface often grayish white fibrillose, brown with some grayish tints when young, later dark brown, sometimes with blackish spots, margin whitish fibrillose", "in dry conditions yellowish brown", dried collections brown to dark brown

Flesh:
pale grayish brown, chocolate brown toward the base, with age darkening entirely, marbled hygrophanous

Gills:
"weakly emarginate, moderately broad to broad", medium spaced to distant; "pale grayish brown, later dark brown, edge concolorous or whitish"

Stem:
5.5-10cm x 0.9-1.3cm at top, 1.5-2.5cm at base, "relatively stout and straight", almost cylindric to clavate; "grayish white fibrillose, later brownish"; dried collections pale grayish brown

Veil:
universal veil "grayish white, often forming a thin sheath over the lower half of stipe, sometimes forming a ring on the upper part of stipe"

Odor:
indistinct or slightly radish-like

Microscopic spores:
spores 9.3-11.1 x 6.1-6.8 microns, narrowly elliptic to weakly amygdaloid, "strongly and fairly coarsely verrucose, strongest at the apex", "slightly (to moderately) dextrinoid"; basidia 4-spored, 34-45 x 8-10 microns, colored as background to "olivaceous brownish to olivaceous greenish"; gills have marginal cells 11-45 x 7-15 microns, clavate to pyriform to sphaeropedunculate; clamp connections present

Notes:
This species was described from Finland and occurs elsewhere in northern Europe including Norway. The ITS sequence FJ039672 from BC (Harrower # 142) matches the holotype of C. oulankaensis. Morphological correlation is desirable.

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