Inosperma erubescens

Inosperma erubescens, commonly known as the Fibrillose Inocybe or the Blushing Fiber Cap, is a species of mushroom in the family Inocybaceae. This mushroom is notable for its distinctive features and potential toxicity, making it an important species for both mycologists and foragers to recognize.

Description

Inosperma erubescens mushrooms have caps that are typically 2 to 5 cm in diameter, initially convex before flattening out with age, often with a slight umbo at the center. The cap surface is fibrillose, giving it a somewhat silky appearance, and can vary in color from pale yellow to brownish. The margin of the cap is usually striate, especially in wet conditions.

The gills are adnate to adnexed, crowded, and initially pale before turning pinkish or reddish as the spores mature. This color change upon spore maturity is a key identifying feature.

The stipe (stem) is 4 to 10 cm long and 0.5 to 1 cm thick, cylindrical, and bears the same color as the cap or slightly lighter. It does not have a ring. The base of the stipe may be bulbous or tapered. The flesh of the mushroom bruises reddish when damaged, which is another characteristic feature of this species.

Distribution and Habitat

Inosperma erubescens is found in various parts of Europe and North America, typically growing in deciduous and mixed forests. It forms mycorrhizal associations with hardwood trees, especially oaks and beeches. This species prefers moist, well-drained soils and is often found in small groups.

Toxicity

Inosperma erubescens contains muscarine, a toxic compound that can cause severe poisoning if ingested. Symptoms of muscarine poisoning include excessive salivation, sweating, tears, blurred vision, abdominal pain, diarrhea, nausea, and vomiting. In severe cases, respiratory failure and death can occur. There is no known antidote for muscarine poisoning, making it crucial to avoid ingestion of this mushroom.

Identification

Care should be taken when identifying Inosperma erubescens due to its resemblance to several edible species. Key features for identification include the fibrillose cap, the pinkish to reddish color of the mature gills, and the reddish bruising of the flesh. Knowledge of its preferred habitat and associated tree species can also aid in identification.

Conservation

While Inosperma erubescens is not currently listed as endangered or threatened, its habitat is susceptible to human activity, including deforestation and pollution. Conservation efforts are important to preserve its natural habitat and ensure the species' survival.

See Also

• Mycorrhiza
• Muscarine
• Mushroom poisoning

Inosperma erubescens
Mycological characteristics
	gills on hymenium
	lacks a stipe
	spore print is pink
	ecology is mycorrhizal
	edibility: poisonous