Public Description of Cortinarius corrugatus Peck

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Name: Cortinarius corrugatus Peck
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 Draft For Wild Mushrooms Of The Northeastern United States By Erlon Bailey (Private)

Description status: Unreviewed

Taxonomic Classification:

Domain: Eukarya
Kingdom: Fungi
Phylum: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Cortinariaceae

General Description:

Cap: 4-10 cm; bell-shaped to convex or widely conical at first, becoming broadly convex to broadly bell-shaped; slimy when fresh or wet, but often merely tacky or even dry; bald, but distinctively corrugated-wrinkled except in the very center; orange-brown to reddish brown or yellowish brown.

Gills: Attached to the stem; close; whitish, grayish, or pale lilac at first, becoming cinnamon to rusty with a slight hint of lilac; cortina ephemeral.

Stem: 7-12 cm long; up to 2 cm thick; more or less equal, terminating in a slightly rounded bulb; dry; finely silky; whitish to yellowish or pale brownish; often with rusty, slimy veil material around the bulb.

Flesh: Whitish; becoming yellowish to rusty in paces when exposed.

Odor and Taste: Not distinctive.

Chemical Reactions: KOH on cap surface dark red to black.

Spore Print: Rusty brown.

Microscopic Features: Spores 10-15 × 7-10 ยต; amygdaliform; moderately to strongly verrucose. Pleurocystidia absent. Marginal cells clavate to subclavate. Pileipellis a slightly gelatinized cutis of ochraceous, encrusted elements.


Eastern N. America


Under beech, oak and hemlock, often under Rhododendron


Kuo, M. (2007, March). Cortinarius corrugatus. Retrieved from the MushroomExpert.Com Web site:


Cortinarius corrugatus Peck, (1898)

Citations in published lists or literature:
Saccardo’s Syll. fung. V: 900; XII: 938; XVI: 110; XXI: 187; XIX: 448

Description author: walt sturgeon (Request Authorship Credit)
Description editor: Erlon Bailey