Rooting bolete

Caloboletus radicans

A species of Bitter boletes.

Caloboletus radicans, commonly known as the rooting bolete, is a woodland fungus notable for its distinctive feature: its fruiting bodies occasionally exhibit root-like filaments. These fibrous structures are instrumental in enabling the mushroom to obtain nourishment through a symbiotic partnership with the trees (most often oak or beech) in whose vicinity it thrives during the warmer months of summer and autumn.

In This Article
Attributes Classification Toxicity Similar Mushrooms

Attributes of Rooting bolete

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Cap Diameter
5 - 20 cm
Height
10 - 20 cm
Cap
Cap 8 - 30 cm across; convex to flat; dirty white, greyish-white; smooth
Cap Shape
Convex, Depressed
Cap Surfaces
Fibrillose-scaly
Stem
Stem 5 - 8 cm tall by 3 - 4 cm wide; swollen or barrel-shaped when young, becming fusiform; lemon-yellow at the top, buff below; with a whitish or pale network
Stem Shapes
Club Shaped
Stem Surfaces
With Reticulum
Flesh
Whitish to pale yellow, turning pale blue when cut
Ring
Ringless
Spore Print Color
Olive-brown
Odor
Strong, unpleasant fungal scent.
Body Color
YellowGrayWhite
Flesh Bruises
Discolor to blue
Growth Form
Scattered, Gregarious
Nutrient Gathering
Mycorrhizal
Substrate
On soil
You can find Rooting bolete by these plants
Oaks, Douglas firs, European beech
Occurence Habitats
Deciduous Woodland, Scrublands
Species Status
Common in southern England
Endangered Species
No

Scientific Classification of Rooting bolete

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Phylum
Club fungi
Class
Mushroom-forming fungi
Order
Boletes and allies
Family
Boletes
Genus
Bitter boletes
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Toxicity and Edibility of Rooting bolete

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Is Rooting bolete Toxic?

Boletus radicans, a substantial ectomycorrhizal fungus, is deemed unsuitable for consumption. Its intense bitterness and the risk of significant health complications if ingested render it inedible. Documented cases of severe emesis and hemorrhagic diarrhea have been linked to its consumption, underscoring its hazardous nature. This species thrives in European deciduous woodlands, typically beneath trees like Beech, Oak, Hornbeam, Lime, and occasionally Rockrose. Key identifying characteristics include a light buff or white cap, yellow pores, a robust stalk, and a noticeable blue discoloration upon bruising or cutting.

Type of poisoning
Gastrointestinal
Toxic Severity
Low to high toxicity
Incubation Period
0.5-6 hours
Poisoning Symptoms
Digestive issues, vertigo, vision complications, blood circulation troubles.