Fig 1
CAP: 5-20cm in diameter.  Dark olive to brownish green with paler outer margin in older specimens.  Starting convex with inrolled margin gradually becoming flattened with central depression.  Scurfy at first becoming viscid. STIPE: Short, equal, pitted and concolorous with cap.  Equal. GILLS/PORES: The decurrent gills are whitish and fairly narrow and crowded.  When bruised they turn sepia.   FLESH: Whitish, brittle and stuffed.  No distinct aroma but taste is hot and acrid. SPORES: Hyaline, ellipsoid and ornamented with ridges. HABITAT: Solitary or in scattered groups under birch. SEASON: Common.  Autumn. EDIBILITY: Inedible.

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