Lurid Bolete

Boletus luridus is a stout fungus with a thick yellow-olive to olive-brown convex cushion-shaped cap that can reach 20 cm (8 in) in diameter. The cap color tends to darken with age, and regions of red, orange, purple, brown, or olive-green can develop in maturity. The cap surface is velvety, becoming smoother with old age, and sticky in wet weather. The thick stem is 8–14 cm (3–6 in) tall and 1–3 cm (0.4–1.2 in) wide, and bears a distinctive orange-red mesh-like pattern on a paler yellowish or ochre background.