Lactarius citriolens Pouzar. syn. L. cilicioides sensu auct. mult. (illustrated 35% life size) Cap 10–20cm across, convex with a deep, funnel-shaped central depression, margin inrolled; pale yellowish-buff to ochre-buff, with scattered ochre fibrils within its surface, which are thicker, stronger-coloured, and sometimes indistinctly banded towards the margin; hard and thick-fleshed, surface sticky, the fibrils forming a coarse fringe of matted hairs up to 10mm wide on the margin. Stem 40–80×20–45mm, narrowing downwards towards the base or cylindrical; pale yellowish-buff, sometimes with indistinct darker spots; hard and rigid, developing a large cavity. Flesh pale yellow. Gills decurrent; pale pinkish ochre-buff. Milk white, in a few seconds sulphur-yellow; taste moderately hot and acrid. Spores 7.5–8.5×6¼, broadly elliptical to subglobose; fairly full network of both thick and thin ridges and an occasional isolated wart. Spore print pale ochre (D–E) with slight salmon tinge. Habitat with birch; late summer to early autumn. Rare. Suspect avoid.