Hydnum albidum

Hydnum repandum var. albidum (Quel.) Rea 540873

Hydnum albidum is a species of mushroom belonging to the family Hydnaceae. It is one of the members of the genus Hydnum, which is known for its distinctive spiny undersides rather than the gills or pores found in most other mushroom families. Hydnum albidum is characterized by its white to pale cream color, both in its cap and spines, which differentiates it from other species within the Hydnum genus. This mushroom is found in forests, forming symbiotic relationships with trees in a mycorrhizal association, which is crucial for nutrient exchange between the soil and the plant.

Description

Hydnum albidum features a cap that can range from 2 to 10 cm in diameter, initially convex before flattening out with age. The surface of the cap is smooth, sometimes featuring slight depressions or irregularities. Its coloration is predominantly white or pale cream, which helps in identification. The spines or teeth under the cap, a hallmark of the Hydnum genus, are also white and can be up to 6 mm long. These spines are decurrent, meaning they extend down the stalk of the mushroom. The stalk itself is 2 to 6 cm tall and 1 to 2 cm thick, often more or less equal in thickness throughout or slightly wider at the base. The flesh of the mushroom is white, firm, and does not change color upon exposure to air.

Habitat and Distribution

Hydnum albidum is primarily found in temperate forests, particularly those dominated by hardwood trees, although it can occasionally be found under conifers. It forms ectomycorrhizal relationships with various tree species, facilitating nutrient exchange between the fungus and its host. This species is more commonly found in North America and Europe, though its exact distribution is not well-documented due to confusion with closely related species and the general underreporting of non-commercial mushroom species.

Edibility

The edibility of Hydnum albidum is considered good, like many of its relatives in the Hydnum genus. It is sought after for its mild flavor and firm texture, making it a desirable addition to various culinary dishes. However, as with all wild mushrooms, proper identification is crucial before consumption to avoid confusion with potentially harmful species.

Conservation

There are no specific conservation concerns listed for Hydnum albidum at this time. However, the general decline in suitable forest habitats due to logging, urbanization, and climate change could potentially impact its populations. Conservation efforts for forest ecosystems indirectly benefit species like Hydnum albidum by preserving their natural habitats.

See Also

• Mycorrhiza
• Ectomycorrhizal fungi
• Mushroom hunting
• Forest conservation

This mushroom-related article is a stub. You can help WikiMD by expanding it.