Dapped webcap

Cortinarius bolaris

A species of Cortinar.

This visually striking fungus, the dapple webcap (Cortinarius bolaris), typically emerges from the ground under birch trees during the transition from late summer to early autumn. Its distinctive reddish cap gradually develops a mottled or speckled appearance as its scales detach, exposing the lighter surface of the cap beneath. Exercise caution, as this particular species is not only toxic itself but also bears a resemblance to other fungi that harbor considerably more potent and lethal poisons.

In This Article
Attributes Classification Toxicity Similar Mushrooms

Attributes of Dapped webcap

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Cap Diameter
3 - 10 cm
Height
4 - 10 cm
Cap
Cap 2.5 - 8 cm; convex or broadly bell-shaped, nearly flat; whitish to pale buff; dry, covered with red to brownish red, appressed scales
Cap Shape
Convex, Bell-shaped, Flat, Central Bump
Cap Surfaces
Fibrillose-scaly
Gills
Attached; close or crowded; dirty yellowish to dull cinnamon, becoming cinnamon to rusty
Gill Attachment
Attached
Stem
Stem 4 - 10 cm long, up to 1.5 cm thick; equal; whitish; dry, red scales or irregular bands; discoloring and bruising rusty orange to red near the base
Stem Shapes
Club Shaped
Stem Surfaces
Scaly
Flesh
Whitish; becoming slowly yellowish when sliced and exposed to air
Ring
With Ring Zone
Spore Print Color
Rusty brown
Odor
Mildly mushroomy but not distinctive.
Body Color
BrownRedWhite
Flesh Bruises
The flesh or milk does not discolor when bruised or cut.
Growth Form
Solitary, Gregarious
Nutrient Gathering
Mycorrhizal
Substrate
On soil
You can find Dapped webcap by these plants
American beech, Oaks, European beech
Occurence Habitats
Deciduous Woodland
Species Status
Widely distributed in eastern North America
Endangered Species
No

Scientific Classification of Dapped webcap

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Phylum
Club fungi
Class
Mushroom-forming fungi
Order
Gilled fungi
Family
Cortinariaceae
Genus
Cortinar
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Toxicity and Edibility of Dapped webcap

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Is Dapped webcap Toxic?

The Dapped webcap mushroom is recognized for its poisonous impact on the kidneys. Ingestion can lead to various symptoms like extreme thirst, headaches, pain in the kidneys, elevated blood pressure, and severe harm to internal organs, especially the liver and kidneys. Due to its distinctive characteristics, it can be mistaken for harmless varieties, thus careful identification is crucial.

Toxins type
Orellanine
Type of poisoning
Nephrotoxic
Toxic Severity
High toxicity
Incubation Period
2-17 days, 4-24 hours with potential early symptoms
Poisoning Symptoms
Intense thirst, parched mouth, aching head, renal discomfort, elevated urea, organ damage, high blood pressure, late stage uremic vomiting, liver and kidney destruction, transparent urine post kidney failure.