Hemileccinum hortonii

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Xerocomus hortonii 89778

Hemileccinum hortonii is a species of bolete fungus within the family Boletaceae. It is found in North America, where it forms symbiotic relationships with hardwood trees, particularly oaks (Quercus spp.). This mycorrhizal fungus is recognized by its distinctive morphological features, which include a brown to reddish-brown cap, a stout stem with a finely netted pattern, and a hymenophore that does not change color upon injury. The spores of Hemileccinum hortonii are olive-brown in color, aiding in its identification.

Description

Hemileccinum hortonii features a cap that can range from 5 to 15 cm in diameter, initially convex before flattening out with age. The surface of the cap is smooth to slightly textured, with a color palette that varies from light brown to a deeper reddish-brown. The pores on the underside of the cap are small and round, typically white or light yellow in color, and do not bruise blue when damaged, a characteristic trait that distinguishes it from some other boletes.

The stem of Hemileccinum hortonii is notable for its robustness and the fine reticulation (net-like pattern) that covers its surface. This reticulation is more pronounced towards the top of the stem. The stem's coloration is generally white to pale yellow, complementing the cap's color.

Habitat and Distribution

Hemileccinum hortonii is predominantly found in hardwood forests across North America, with a particular affinity for oak trees. It forms ectomycorrhizal associations, where the fungal mycelium envelops the roots of the host tree, facilitating nutrient exchange between the fungus and the tree. This mutualistic relationship is crucial for the survival and growth of both organisms. The fruiting bodies of Hemileccinum hortonii appear during the summer and fall, emerging from the soil near the base of its host trees.

Edibility

The edibility of Hemileccinum hortonii is a topic of some debate among mycologists and foragers. While there are no known toxic compounds present in this species, its culinary value is considered to be of low to moderate quality by some. As with all wild mushrooms, caution is advised when foraging, and positive identification is crucial to avoid confusion with potentially harmful species.

Conservation

As of the current understanding, Hemileccinum hortonii does not face any immediate threats that would warrant conservation concern. However, like many fungi, its existence is closely tied to the health of its habitat, particularly mature hardwood forests. Conservation efforts aimed at preserving these ecosystems indirectly benefit Hemileccinum hortonii and countless other species that rely on these environments.