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Gomphidius rutilus

 
Gomphidius rutilus, a gilled fungus of the order Boletales, is found beneath pine trees. The copper-brown cap of this edible fungus is slimy when wet and dries to a bright glossy sheen.

Identification guide

Cap

5 to 12 cm in diameter (exceptionally 15 cm) the coppery caps of Gomphidius rutilus take on a metallic sheen on sunny days. Occasional specimens flatten fully, sometimes with a sharp umbo, but more often the caps remain convex when mature.

In wet weather the caps of this species are viscid, drying with a smooth shiny surface.

The pale cap flesh is vinaceous (tinted like red wine).

Gills

Although from its spore characteristics this species is seen to be more closely related to the boletes than to the agaric fungi, it produces its spores via gills rather than pores.

The close, thick gills are initially grey-white or dull olive-buff, but they soon take on a dirty purple hue. They are deeply decurrent.

Stipe

5 to 12 mm in diameter and usually 6 to 12 cm tall, the stems are reddish or vinaceous towards the top and yellow towards the base. There is a ring at the apex, where the stem narrows abruptly to the region where the gills are attached.

Inside, the stem flesh is firm and solid; like the cap flesh, its colour is vinaceous or pale reddish-brown except near the base, where it becomes chrome yellow.

Spore print

Black.

Odour/taste

Not distinctive.

Habitat

In grass beneath pines and, less frequently, spruce.

Season

August to November.

Occurrence

Fairly frequent.

Similar species

  1. Gomphidius glutinosus is a much rarer find, also occurring under pines; its cap is grey-violet and its stem is white near the cap and lemon grey towards the base. A glutinous zone at the apex of the stem gradually blackens with age.
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