This is a fresh post for a Bolete found under Quercus ilex, fruiting early in October, in calcareous substrate present in the M altese Islands, maybe someone is familiar with them.
This collection forms flattened or shallowly convex caps sometimes upturning (involute) to a large extent initially starting as dark sepia or cinnamon brown with red hues, cracking at an early age as a net and deepening while maturing with the exposed flesh in these cracks becoming amazingly deep red. It has the X. chrysenteron effect! Margin beige to light brown
The stipe is chrome yellow with golden-sepia flushes, especially towards the base. Mature specimens (5 hrs after collection) develop a reddish collar under the stipe. W hen cut in half, there is no bluening both in the stipe or in the pileus, however a red layer is formed below the cuticle of the cap and at the borders of the uppermost part of the stipe. The context in collected specimens develops a sepia brown color at the lower half (but no color change in the fresh-cut specimens, (hence color is light yellow)
Hymenium or stipe do not change color when bruised
Hymenium pale yellow then darkens to olive-brown with age
Pores angular, rectangular, pentagon or sometimes hexagon, 0.5 to 1.0 (1.3) mm across the widest diameter.
Scent faint sweet, but unless something abnormal took place, it became strongly aromatic, like resin of pine trees when oldened by one day
Spores elongated ellipsoid (truncate ends not detected) with amorphous non distinct oil bodies. Measurement: 10.2 [11.6 ; 12.2] 13.7 × 4.3 [5.1 ; 5.5] 6.3 µm [ Mean = 11.9 × 5.3 µm ]; Qe = 1.9 [2.2 ; 2.3] 2.6 [mean 2.3] Inamyloid.