Hedgehog Mushroom

Hydnum repandum

Also known as: Sweet Tooth, Wood Hedgehog

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Edibility edible
Phylum Basidiomycota
Family Hydnaceae
Conservation Least Concern

Complete Taxonomy

Kingdom: Fungi
Phylum: Basidiomycota
Class: Agaricomycetes
Order: Cantharellales
Family: Hydnaceae
Genus: Hydnum
Species: H. repandum

Description

Hydnum repandum, the hedgehog mushroom, is a choice edible distinguished by its spines (teeth) on the underside of the cap instead of gills or pores. Its pale orange to buff color, pleasant smell, and mild taste make it popular among foragers. It has no poisonous lookalikes, making it safe for beginners. The mushroom forms mycorrhizal associations with various trees and fruits in temperate forests.

Physical Characteristics

Cap Shape: Irregular, convex becoming depressed, often lobed
Cap Color: Pale orange, buff, cream to pale brown; 3-15 cm diameter
Size: 3-15 cm diameter
Gill Attachment: Spines (teeth) 2-6 mm long, decurrent, cream to pale orange
Spore Print: White to pale cream
Stipe: Central or off-center, solid, same color as cap; 3-8 cm tall
Habitat: Mycorrhizal with hardwoods and conifers
Fruiting Season: Late summer to fall

Distribution

Europe, Asia, North America

Habitat

Forms ectomycorrhizal associations with broadleaf and coniferous trees in mixed forests, particularly oak, beech, and pine.

Ecological Role

Forms ectomycorrhizal partnerships with forest trees. Important component of forest ecosystems, facilitating nutrient exchange.

Medicinal & Nutritional Properties

  • Good source of protein and dietary fiber
  • Contains B vitamins
  • Minerals including potassium and phosphorus
  • Low in calories
  • Mild flavor, good texture

Cultural Significance

Popular edible mushroom in Europe and North America. Commercially harvested and sold in markets. Considered a "foolproof" mushroom for novice foragers due to lack of poisonous lookalikes. Versatile in cooking.

Fascinating Facts

  • Spines instead of gills make it unmistakable
  • No poisonous lookalikes - safe for beginners
  • Can be slightly bitter in older specimens
  • Spines break off easily during collection
  • Good for freezing and preserving
  • Sometimes called "sweet tooth" for pleasant flavor
  • Related species H. umbilicatum has depressed cap center
  • Teeth on underside are unique spore-producing structures