Suillus grevillei

Suill.grev

Suillus grevillei (also known as Greville's Bolete or the Larch Bolete) is a species of mushroom belonging to the genus Suillus. It is a mycorrhizal fungus, forming symbiotic associations with the roots of larch trees, which helps the tree to absorb nutrients from the soil, while the fungus benefits from access to carbohydrates produced by the tree. This mutualistic relationship is crucial for the ecosystem, supporting both the growth of the larch trees and the propagation of the Suillus grevillei.

Description

Suillus grevillei features a distinctive golden-yellow cap that can range from 5 to 15 cm in diameter. The cap's surface is smooth to slightly sticky when wet. Underneath the cap, instead of gills, it has yellow pores that become olive-green as the mushroom ages. The stem is typically 2 to 10 cm long and 1 to 2.5 cm thick, colored similarly to the cap but may feature a ring or remnants of a veil, which is more prominent in young specimens.

Habitat and Distribution

Suillus grevillei is commonly found in coniferous forests, especially in association with larch trees, its exclusive symbiotic partner. It is widely distributed across the Northern Hemisphere, including Europe, North America, and parts of Asia where larch trees are native. The fruiting season of Suillus grevillei spans from late summer to fall, depending on the local climate and elevation.

Edibility

This mushroom is considered edible and is appreciated in some cultures for its nutty flavor, although it is not as highly regarded as other boletes like Boletus edulis. It is recommended to remove the slimy cap skin before cooking, as it can be difficult to digest for some people. Suillus grevillei can be used in a variety of dishes, including soups, stews, and sautés.

Conservation

While Suillus grevillei is not currently listed as endangered or threatened, its existence is closely tied to the health of larch forests. Deforestation, climate change, and diseases affecting larch trees can indirectly threaten the populations of Suillus grevillei. Conservation efforts for larch forests indirectly benefit this and other mycorrhizal fungi species.

See Also

• Mycorrhiza
• Boletus edulis
• Coniferous forest
• Mushroom hunting