Butyriboletus appendiculatus

Anh%C3%A4ngsel-Röhrling Boletus appendiculatus

Butyriboletus appendiculatus, commonly known as the Butter Bolete, is a species of mushroom belonging to the Boletaceae family. This fungus is notable for its edible qualities and distinctive appearance, making it a popular choice among foragers and mushroom enthusiasts. The species name "appendiculatus" refers to the appendiculate (hanging) nature of the veil remnants on the mushroom's margin in its young stage.

Description

Butyriboletus appendiculatus mushrooms have a large, fleshy cap that can range in color from yellow-brown to dark brown. The cap typically measures 7 to 20 cm in diameter and has a smooth to slightly velvety texture. The pores on the underside of the cap are small and round, changing color from white or pale yellow to greenish-yellow as the mushroom ages. The stout stem is usually 5 to 15 cm tall and 2 to 5 cm thick, often featuring a net-like pattern known as reticulation.

The flesh of the mushroom is thick, white, and does not change color significantly when cut or bruised. Butyriboletus appendiculatus has a mild, nutty flavor and a soft, buttery texture, which is how it earned its common name, the Butter Bolete.

Habitat and Distribution

Butyriboletus appendiculatus is primarily found in deciduous and mixed forests, forming mycorrhizal associations with a variety of trees, including oaks (Quercus spp.), beeches (Fagus spp.), and chestnuts (Castanea spp.). This species is widely distributed across Europe and North America, thriving in warm, humid conditions during the late summer and fall months.

Edibility

The Butter Bolete is considered an excellent edible mushroom, prized for its taste and texture. It can be prepared in various ways, including sautéing, grilling, and boiling. However, as with all wild mushrooms, it is crucial to positively identify Butyriboletus appendiculatus before consumption, as it can be confused with less palatable or even poisonous species.

Conservation

While Butyriboletus appendiculatus is not currently listed as endangered or threatened, habitat destruction and overharvesting pose potential risks to its populations. Sustainable foraging practices are encouraged to ensure the continued abundance of this species.

See Also

• Boletus edulis
• Mycorrhiza
• Edible mushrooms