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Species Information
Summary: Features include cream to pale ochraceous yellow cap with very finely innately fibrillose surface, white flesh, emarginate, almost crowded, pale grayish brown gills, white stem with slightly marginate bulb, white universal veil, bitter cap cuticle, and growth under confers. The description is derived from Liimatainen(2).
Cortinarius cremeiamarescens was sequenced from BC (from mycorrhizal root tip of Betula papyrifera) and AK. Collections were both sequenced and examined from Finland and Sweden.
Cap: 3.5-5.5cm across, hemispheric to convex, expanding; cream to pale ochraceous yellow; "very finely innately fibrillose"
Flesh: white
Gills: "emarginate, almost crowded"; "pale greyish brown"
Stem: 6.5-9.5cm x 0.7-1.4cm at top, 1-2.3cm wide at base, "with slightly marginate bulb"; white at first, becoming pale brownish yellow when old
Veil: universal veil "white, sparse, at bulb margin"
Odor: indistinct
Taste: cap cuticle bitter
Microscopic spores: spores 7.0-8.8 x 4.3-5.0 microns, citriform [lemon-shaped] to narrowly fusoid, "beaked, thin-walled, fairly finely, densely, and often sharply verrucose, slightly to moderately dextrinoid; basidia 4-spored, 24-34 x 6.5-8 microns, "narrowly clavate, very thin-walled, colourless, more or less filled with blood red drops
Habitat / Range
in "hemiboreal and southern boreal conifer-dominated forests on rich to calcareous soil"; late August to late October
Similar Species
Cortinarius gentianeus Rob. Henry (= C. caesiostramineus sensu Jeppesen et al. 2012 p.p.) was previously confused with this species but is larger, typically has paler, more whitish or grayish exsiccati and larger (7.7-9.3 x 4.8-5.4 microns) "amygdaloid to citriform, less thin-walled, more dextrinoid, and more verrucose spores, and much more abundant large, blood red, foamy, worm-like guttules in the pileipellis and lamellar trama". Liimatainen(2), See also SIMILAR section of Cortinarius pallidirimosus.
