21 October 2008 Surrey. Photograph copyright Leif Goodwin.
Brown Roll Rim
Convex, then flattened, usually with a depressed centre, velvety, especially at the margin, ochraceous to yellowish brown, to about 15 cm across
Decurrent, crowded, yellowish brown, darkening on bruising
Cylindrical, concolorous with the cap
Late summer to autumn
In deciduous woods, favouring birch
Spores ellipsoidal, smooth (7-10) x (5-6) µm2
Poisonous, potentially deadly. This fungus is widely eaten in Eastern Europe, especially Poland, where it is salted or pickled. Nevertheless stomach upsets are commonplace. The poisoning consists of gastrointestinal irritation, and haemolytic anaemia (the breakdown of red blood cells). The toxins can cause long lasting organ damage.
September 2001 Surrey. Photograph copyright Leif Goodwin.