Lactarius scrobiculatus

Lactarius scrobiculatus is a basidiomycete fungus, belonging to the genus Lactarius, whose members are called "milk caps." Taxonomy places this species into subgenus Piperites, section Zonarii, subsection Scrobiculati. The distinctive fruiting bodies of this large, inedible fungus are locally common in forests throughout Europe and North America.

Description
Lactarius scrobiculatus produces large agaricoid fruiting bodies which arise from soil. The cap has an eye-catching orange to yellow coloration and is covered with small scales arranged in indistinctive concentric rings. The surface is wet, glossy and slimy especially in wet weather. The cap may be wide, with a large diameter (about 15 cm in mature specimens), but with a depressed centre and slightly inrolled margin. The gills are crowded and coloured cream to yellow, with darker patches being present sometimes. When cut, the gills bleed copious amounts of a white to cream milk (latex), which soon darkens to yellow. The stem, in relation to the cap, is quite short and stubby. The surface is cap-coloured but the presence of small pits, filled with fluid, is a key identifying feature. The stem is hollow. The spores are coloured creamy with an elliptical-globular shape.

When a small piece of flesh is chewed, it tastes quite acrid. So acrid, that a researcher reportedly developed a numbness in the mouth, having nibbled on a piece. It doesn't have any discernible smell.

There are several recognised varieties, including var. canadensis. var. montanus and var. pubescens.

Distribution
This species is known throughout Europe, as well as North America where its occurrence is rare. It occurrs primarily in coniferous forests where it forms a mycorrhizal relationship and appears to prefer damp, boggy areas. The fruibodies rarely occur singly — usually there are several more nearby. The fruiting season of L. scrobiculatus is summer to autumn.

Edibility
Lactarius scrobiculatus is inedible and may even cause irritation to the gastrointestinal tract. It is eaten in eastern Europe after pickling or thorough cooking and even then, some might still experience distressing symptoms.