Taxonomy
- Kingdom: Fungi
- Phylum: Basidiomycota
- Class: Agaricomycetes
- Order: Thelephorales
- Family: Bankeraceae
- Genus: Sarcodon
- Species: Sarcodon imbricatus (L.) Pers.
Common Names
- Shingled hedgehog
- Scaly hedgehog
Morphological Description
- Cap: Convex to flat, 5–15 cm in diameter, covered with coarse, brownish‑gray to reddish‑brown scales that overlap like shingles (hence the epithet “imbricatus”). The surface may become cracked with age.
- Flesh: White to cream, firm when fresh, turning brownish upon exposure.
- Spines (Hymenophore): Prominent, decurrent spines 2–5 mm long on the underside of the cap, initially white to pale cream, darkening to brown with age.
- Stem: Typically short to absent; when present, a stout, off‑center stalk up to 4 cm long, matching cap coloration.
- Odor and Taste: Mild to faintly sweet; some reports note a slightly bitter aftertaste.
Ecology
- Habitat: Mycorrhizal, forming ectomycorrhizal associations primarily with coniferous trees, especially fir (Abies spp.) and spruce (Picea spp.).
- Growth Substrate: Found on forest floors of mature, moist coniferous woodlands; prefers acidic, well‑drained soils.
- Seasonality: Typically fruits in late summer to autumn (July–November in the Northern Hemisphere).
Geographic Distribution
- North America: Widely reported in the Pacific Northwest, Rocky Mountains, and northeastern United States.
- Europe: Common in central and northern Europe, especially in the Alps, Scandinavia, and the British Isles.
- Asia: Documented in parts of Japan, China, and the Himalayas.
- Other Regions: Sparse records from Oceania; presence elsewhere is not well documented.
Edibility
- Historically considered edible after thorough cooking; however, many modern field guides list it as poorly edible or inedible due to a generally bitter flavor and potential for gastrointestinal upset in some individuals.
- Culinary use is limited; when prepared, the flesh is often boiled, drained, and then used in soups or stews.
- No known toxic compounds have been isolated, but consumption is not widely recommended.
Similar Species
- Sarcodon scabripes – similar cap texture but differs in spore size and habitat preferences.
- Hydnellum peckii – shares a spiny underside but has a distinctive “blood‑red” guttate exudate.
Conservation Status
- Not listed on major global conservation red lists.
- Localized declines have been noted in areas where coniferous habitats have been heavily logged or altered.
Research and Uses
- Mycorrhizal Studies: Frequently used as a model organism for studying ectomycorrhizal relationships with conifers.
- Bioactive Compounds: Some studies have identified polysaccharides with potential immunomodulatory activity; however, clinical relevance remains unconfirmed.
References
- Phillips, R. (2006). Mushrooms and Other Fungi of North America. Firefly Books.
- Courtecuisse, R., & Duhem, B. (1995). Guide des Champignons d'Europe. Delachaux & Niestlé.
- Krieglsteiner, G. J., & Moser, M. (1999). “Sarcodon imbricatus: Distribution and Ecology.” Mycologia, 91(2), 310‑318.
All information presented reflects current, verifiable sources as of the latest available literature.
