Boletus albidus Rocques syn. B. radicans Pers. ex Fr. s. Kall.
Wurzeinder Bitterröhrling Cèpe radicant Cap 8–16cm, dingy white to clay buff with ochraceous tints and smokey-grey margin, downy at first becoming smooth or cracking into small scales at centre, more ochraceous with age. Stem 50–80 x 30–40mm, robust, swollen towards the rooting base, sometimes flushed reddish, lemon-yellow at apex, spotted rusty to dirty ochraceous near base, net straw-coloured and distinct near apex, disappearing below. Flesh yellow then rapidly white in cap when cut; reacting similarly in stem but becoming pale blue especially in apex and rapidly fading. Taste unpleasant or bitter, smell spicy. Tubes lemon-yellow becoming blue on cutting or bruising. Pores small, round, lemon-yellow bruising blue. Spore print olivaceous snuff-brown. Spores subfusiform, 12–16 x 4.5–6µ. Habitat with broad-leaved trees, particularly oak and beech. Season summer to autumn. Rare. Not edible due to its bitterness. Found In Europe.