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Paxillus involutus   (Poison Pax)
North America, Europe
Cap 5-12 cm diameter, stem 3-7 cm tall * 0.8-1.2 cm diameter
This site contains no information about the edibility or toxicity of mushrooms.

Paxillus involutus, also known as Poison Pax, is a medium to large agaric with a strongly inrolled, yellow- to red-brown cap and crowded, decurrent gills extended down on the firm stem. The mushroom grows solitary or in trooping groups on soil in leaf woods.

Cap initially convex then more funnel-shaped with a depressed centre and rolled rim, may be reddish-, yellowish- or olive-brown in colour. The surface is initially downy and later smooth, becoming sticky when wet. Gills brownish yellow, narrow, decurrent and forked, and can be peeled easily from the flesh. They further down toward the stem become more irregular and anastomose. Stem is similarly coloured as the cap, however bruising darker brown. It is smooth, equal or tapering downwards. The mushroom has no ring.

Similar species Paxillus filamentous has a less incurved margin, yellow flesh, and occurs under alder.

Paxillus involutus on the First Nature Web site.
Paxillus involutus on the MushroomExpert.Com Web site.

Many mushrooms are poisonous and some are lethally poisonous. It can be very hard to distinguish between an edible and a poisonous mushroom. We recommend, because of this, that you don't eat wild mushrooms at all, and this site does not contain any information about the edibility or toxicity of the mushrooms listed here.

Although efforts have been made to ensure accuracy on this website, the information may contain errors and omissions and should not be relied upon and be used as any basis for eating any plants or mushrooms.

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Many of the most common mushrooms are poisonous and some are lethally poisonous and this website cannot and will not tell you whether the mushrooms you find are safe.

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