Public Description of Cortinarius semisanguineus (Fr.) Gill.

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Name: Cortinarius semisanguineus (Fr.) Gill.
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 Draft For Wild Mushrooms Of The Northeastern United States By Erlon (Private)

Description status: Unreviewed

Taxonomic Classification:

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

General Description:

Cap width 1 to 2 in (2.5 cm to 5 cm)Bell shaped to convex or nearly flat usually with an umbo, ochraceous yellow to cinnamon brown paler toward the margin surface; smooth fibrillose silky rarely breaking up into fine scales

Flesh yellowish white to ochraceous, odor not distinctive, taste mild or bitter

Gills Adnate to notched crowded rusty red to blood red.
Stalk length 1 to 2 1/2 in 2.5 to 6.5 cm more or less equal pale yellow to tawny surface fibrillose partial veil (cortina) sometimes leaving an evanescent web like ring zone on the upper stalk.

Spores 6 to 8 × 3 to 4.5 microns elliptical surface minutely roughened pale brown non amyloid. Spore print is a rusty brown;

Diagnostic Description:
Found occasionally in Western North America but more common in Eastern North America widely distributed. Known in West Virgina


Solitary or in scattered groups or caespitose clusters on soil or mossy ground in mixed wood commonly found under Oak and Hickory but occasionally under conifers mycorrhizal.

Look Alikes:

Several others are similar Cortinarius cinnamomeus is similar but has yellowish cinnamon gills Cortinarius sanguineus is entirely blood red.


Members of the Dermocbe group may be poisonous/ Those in this group are used for dyeing wool. A rich crimson dye can be derived from this species.


Micheal Kou

Roody (2006) Mushrooms of West Virginia and the central Appalachians page 194

Arora (1986) Mushrooms Dymystified page 454


Current Name:
Cortinarius semisanguineus (Fr.) Gillet, Les Hyménomycètes ou description de tous les champignons (fungi) qui croissent en France (Alençon): 484 (1874)

Agaricus cinnamomeus a semisanguineus Fr., Syst. mycol. (Lundae) 1: 229 (1821)
Cortinarius cinnamomeus ß semisanguineus (Fr.) Sacc., Syll. fung. (Abellini) 5: 942 (1887)
Dermocybe semisanguinea (Fr.) M.M. Moser, Schweiz. Z. Pilzk. 52(9): 129 (1974)

Description author: Eddee (Request Authorship Credit)
Description editor: walt sturgeon

Created: 2009-10-08 00:31:29 EDT (-0400) by Eddee (eddeeee)
Last modified: 2012-01-15 20:58:13 EST (-0500) by walt sturgeon (Mycowalt)
Viewed: 194 times, last viewed: 2018-12-30 20:10:11 EST (-0500)