Cortinarius caperatus

Cap

5-12(15) cm in diameter, ovoid to convex then spreading, broadly hilly, dry, glabrous, pleated-wrinkled, tawny-beige to ochre-yellow, often powdery-pruinous and whitish in the center

Gills

adnate, broad, tight, brownish cream, darker with age

Stem

5-10(13) x 1-2 cm, equal to broadened towards the base, robust, dry, smooth or ridged, furfuraceous at the apex, whitish to brownish, with a median ring, protruding and whitish, easily fleeting

Partial veil

membranous, white, leaving a ring on the foot

Flesh

thick, whitish, grayish to pale lilac

Smell and flavor

indistinct smell in cool, floral in dry, and indistinct flavor in sweet

Spore

rust brown

basidia

clavate, with 4 sterigmata, curled at the base, 36-45 x 11-12 µm

Spores

amygdaliform to citriform, moderately warty, with slightly thickened wall, 0.5-0.6 µm, with hilar appendage, more rarely with truncated germ pore, uniguttulate, brownish to reddish in 2.5% NH4OH, dextrinoids, acyanophils, 9.9-12.7 x 6.7-8.5µm, Q=1.3-1.7, Q medium=1.5

Hymenial cystids

absent

Caulocystidia

absent

Lamellar framework

parallel, formed of clavate, rarely subfusiform, often curly hyphae, up to 64-68 µm in length

Pileipellis

duplex:

a) cutis
b) cellular subpellis

Stipitipellis

formed of cylindrical, curly, emergent hyphae

Loops

observed in the lamellar framework and in the stipitipellis

Mode of growth

solitary or often gregarious

Ecology

mycorrhizal
on soil especially fir-birch stands

Period

July to October

Frequency

common

Edibility

edible choice
with care

Remarks

This cortinaire has a unique morphology, counts as the only species in Quebec and which is also the type of the Rozites section.
It is characterized by its yellowish to warm brown, pleated-wrinkled, pruinose in the center cap, its median membranous ring and its rusty brown spore.
It is often found in the fir-birch zone.
In rainy weather, the hat completely changes appearance due to its hygrophaneity. The powdery-pruinous appearance on the disc disappears completely and the cap becomes two-tone, remaining paler in the center. However, we manage to recognize the species by its soft foot and equipped with a small membranous ring, remains of the veil.
When dehydrated, it has a floral smell.
Moreover, it is the only cortinaire commonly
consumed in Quebec that you quickly learn to recognize.
It is sometimes confused with C. claricolor, but only when specimens are cut low to the ground.

Molecular Confirmation

With a reference sequence of C. caperatus. The type sequence is not available.

- MQ17032, Chibougamau, ITS (Bold: MQCOR011-17)
- Q2637, Lac-Beauport, ITS (Genbank: KJ705158.1)
- Jamesie, ITS (Bold: QBC012-08)
- Jamesie, , ITS (Bold: JULY070-08 (
Bold :
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ANTIC169-20