Boletus reticulatus Schaeff.
Fruit body: cap up to 20 cm, fleshy, rounded then expanded, smooth, cap skin is very thin and often entirely cracked, most often in shade of milky coffee. Tubes are whitish, then yellowish, pores very small, whitish then greenish-yellow. Stem is up to 20x5 cm, cylindrical, in shades of cap colour, covered with whitish reticulum which elongates and disappears towards base.
Microscopy: spores subfusiform, 14-17x4.5-5.5 μm, individually greenish-yellow, brown-olive en masse.
Flesh: hard, whitish, unchanging, mild smell and taste reminiscent of walnut.
Habitat: gregarious in deciduous woods.
Edibility: edible, priced, commercially exploited.
Reference: Uzelac, B. (2009). Gljive Srbije i zapadnog Balkana, BGV Logik,
Photo: Goran Milošević