Fungarium.INFO EncyclopediaHome

Cortinarius sanguineus

Bloodred Webcap

Cortinarius sanguineus — 2026-09-17
Scientific identification
Cortinarius sanguineus (Wulfen) Gray
Family
Cortinariaceae
Class
Agaricomycetes
Genus
Cortinarius

Names across languages

  • English: Bloodred Webcap
  • German: Blutroter Hautkopf
  • Finnish: Veriseitikki
  • Estonian: Verev vöödik
  • Russian: Паутинник кроваво-красный

The scientific profile

From the latest record: 2026-09-17.

Hymenium

Gills moderately spaced; bright carmine to blood-red when young, becoming rusty red-brown with maturity

Cap

Convex to broadly convex, later plane, often with a broad umbo; hygrophanous, finely silky-fibrillose; rich blood-red, dark red to dull reddish-brown

Hymenium Attachment

Adnate

Stipe

Slender, cylindrical, blood-red to dark red; orange-yellow to reddish-yellow basal mycelium; cortina red and ephemeral; ring absent

Spore print

Spore print rusty brown

Ecology

Mycorrhizal mainly with spruce; mesic to damp mossy coniferous forests, often among Sphagnum and bilberry on nutrient-rich ground; scattered or gregariously; late summer to autumn

Edibility

Not recommended; considered inedible

Uses & compounds

Anthraquinone pigments including emodin, dermocybin, dermolutein and dermorubin

Description

Dye fungus, yields red and reddish-brown shades

Fruit body

Fruit body small to medium; stipe ~3–8.5 cm long and ~0.3–0.7 cm thick

Dimensions

Cap ∅ ~2.5–5 cm

Flesh

Dark red to blood-red, with orange tints toward the stipe base; unchanging when cut

Chemical reactions

KOH distinctly aniline-red on cap surface

Odour

Cedar-like, especially in the gills

Microscopy

Spores amygdaloid to ellipsoid, moderately verrucose, weakly dextrinoid, ~5.6–7.3 × 3.1–4.6 µm; basidia 4-spored; pileipellis hyphae lacking or with only slight encrustation; clamp connections present

Overview

Blood-red spruce webcap with carmine gills and rusty spores

1821). Nat. Arr. Brit. Pl. (London) 1: 629.

Field encounters

17/Sep/2026, 5:08 PM

Raudoja veehoidla, Raudoja, Harju, Eesti

Conifer dominant forest, within young spruces, deep in wet moss (Hylocomium splendens)

59°22'44.3"N 25°29'16.2"E

🌡️ 14°C ⛅ Partly sunny 💨 Wind 260° W->E, 15 km/h

Original Instagram post

Source hashtags

#cortinariussanguineus #mushroomphotos #fungimacro #bloodredwebcap #naturephotography

Back to the collection · Photography and field notes by @fungarium.info