Uloporus lividus Fr. Quél. syn. Boletus lividus Fr. syn. Gyrodon lividus Fr. (Sacc.) Erlen-Grübling Bolet livide Alder Bolete. Cap 4–10cm, straw-coloured or pale buff often with a tinge of rust, viscid at first becoming dry. Stem 30–70 x 10–20mm, concolorous with cap or paler later flushed vinaceous brown. Flesh whitish-lemon in cap, becoming blue above the tubes and in the stem apex, rusty towards the stem base. Taste and smell not distinctive. Tubes bright sulphur-yellow, bruising greenish-blue then fading to brown. Pores large, angular, similarly coloured bruising dark blue-grey. Spore print olivaceous brown. Spores ellipsoid to ovoid, 4.5–6 x 3–4um. Habitat solitary or often joined at the stem to several others into tufts; with alders. Season autumn. Rare. Edible. Found In Europe.