Russula aeruginea

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2005-08-18 Russula aeruginea 14354 mod

Russula aeruginea is a species of mushroom belonging to the genus Russula, which is part of the large family Russulaceae. Known for its distinctive green cap, this mushroom is found in various types of woodlands across the Northern Hemisphere. It is one of the many species within the diverse and complex genus that are commonly referred to as brittlegills.

Description

Russula aeruginea is characterized by its green cap, which can range in color from bright grass green to olive. The cap is typically 4-10 cm in diameter, with a smooth surface that becomes sticky when wet. The edges of the cap are often slightly rolled inwards. Underneath the cap, the gills are white to cream, dense, and attached to the stout, white stem. The stem itself is 2-8 cm high and 1-2.5 cm thick, feeling firm but brittle, a common trait among Russula species.

The flesh of Russula aeruginea is white and maintains its color when cut or bruised. It has a mild taste and is considered edible, although not highly prized. The spore print of this mushroom is white, which is a key feature in identifying species within the Russula genus.

Habitat and Distribution

Russula aeruginea is predominantly found in deciduous and coniferous forests, forming mycorrhizal associations with a wide variety of trees. This symbiotic relationship is crucial for nutrient exchange between the fungus and its host tree. The mushroom is widely distributed in the Northern Hemisphere, including parts of North America, Europe, and Asia. It tends to appear from late summer to late autumn, depending on local climatic conditions.

Edibility

While Russula aeruginea is edible, it is not considered among the best of the Russula species due to its relatively bland taste. It is important for foragers to exercise caution when identifying and consuming wild mushrooms, as many Russula species look similar and some may be inedible or toxic.

Similar Species

Russula aeruginea can be confused with other green-capped Russula species, such as Russula virescens and Russula parvovirescens. Detailed examination, including spore print and taste, is necessary for accurate identification. The presence of a mild taste and a white spore print are helpful characteristics in distinguishing Russula aeruginea from potentially harmful look-alikes.

Conservation

There are no known significant threats to Russula aeruginea, and it is not listed on any conservation red lists. However, like all wild mushrooms, its populations are dependent on healthy woodland ecosystems. Conservation of its habitat is essential for the sustainability of this species and the myriad other organisms that form part of the forest ecosystem.