Russula risigallina

2012-06-15 Russula risigallina (Batsch) Saccardo 228083

Russula risigallina is a species of mushroom belonging to the genus Russula, which is part of the large family Russulaceae. Known for its distinctive features and habitat, Russula risigallina is a subject of interest among mycologists and mushroom foragers alike.

Description

Russula risigallina mushrooms are characterized by their cap, which can range in color from yellow to orange-brown, and typically measures between 5 to 10 cm in diameter. The cap is convex in young specimens but tends to flatten with age, often developing a central depression. The surface of the cap is smooth and can appear slightly greasy in wet conditions.

The gills of Russula risigallina are adnate to slightly decurrent, white to cream in color, and become more yellowish as the mushroom ages. They are relatively crowded and can be easily broken, a common trait within the Russula genus.

The stipe (stem) is white, turning yellowish with age or upon bruising, and measures approximately 4 to 8 cm in height and 1 to 2.5 cm in width. It is cylindrical and smooth, with a brittle texture that is typical of Russula species.

Russula risigallina has a mild taste, unlike some of its relatives in the Russula genus, which can be very peppery or bitter. The spore print of this mushroom is cream to yellowish, which helps in its identification.

Habitat and Distribution

Russula risigallina is primarily found in deciduous and mixed forests, forming mycorrhizal associations with a variety of trees, including oaks (Quercus spp.), beeches (Fagus spp.), and pines (Pinus spp.). These symbiotic relationships are crucial for the nutrient exchange between the fungus and its host tree. The species is more commonly encountered in Europe but can also be found in various parts of North America and Asia, depending on the presence of suitable forest habitats.

Edibility

While Russula risigallina is considered edible, it is not regarded as one of the more desirable species within the genus due to its mild flavor and relatively brittle texture. As with all wild mushrooms, caution should be exercised when foraging, as many Russula species are difficult to distinguish from one another, and some may cause gastrointestinal upset if consumed.

Conservation

Currently, there are no specific conservation concerns regarding Russula risigallina, as it tends to be relatively common within its habitat range. However, like many fungi, its presence is dependent on the health of forest ecosystems, highlighting the importance of preserving natural habitats.