Boletus barrowsii

Boletus barrowsii is a species of mushroom belonging to the Boletaceae family, within the Boletus genus. It is named after Charles Barrows, an amateur mycologist who contributed significantly to the study of mushrooms in the southwestern United States. This mushroom is notable for its preference for growing in arid and semi-arid regions, particularly in association with Pinus edulis (piñon pine) and various species of oak (Quercus spp.). It is found predominantly in the southwestern United States, including states such as Arizona, New Mexico, and Colorado, extending into parts of Mexico.

Description

Boletus barrowsii features a large, stout stature with a distinctive white to cream-colored cap that can reach up to 15 cm in diameter. The cap is typically smooth, becoming cracked or fissured with age. The pore surface is white to pale yellow, turning blue when bruised. The stipe (stem) is also white to cream and can be adorned with a fine network (reticulation) at the top. The flesh of the mushroom is thick, white, and does not change color upon exposure to air, a characteristic feature distinguishing it from some closely related species.

Habitat and Distribution

This species has a preference for sandy soils in arid to semi-arid environments, often found in symbiotic association with piñon pines and oaks. Its distribution is primarily in the southwestern United States, with occurrences also reported in northern Mexico. The fruiting season extends from late summer to fall, depending on local climatic conditions.

Edibility

Boletus barrowsii is considered an edible mushroom, prized for its firm texture and flavor. However, as with all wild mushrooms, caution is advised when foraging, as it can be confused with other less palatable or toxic boletes. Proper identification by an experienced mycologist is recommended before consumption.

Conservation

While not currently listed as endangered or threatened, the habitat of Boletus barrowsii is susceptible to the impacts of climate change, urbanization, and land use changes. Conservation efforts are important to ensure the sustainability of its populations and the ecosystems in which it thrives.