I am reading the discussion... those I highlighted in green match well, those in red do not match with my specimen (in my opinion!) Those left unhighlighted not important or distict
Characteristic features of Boletus marekii can be summarised as follows: fruit
bodies relatively small, of a xerocomoid appearance; pileipellis red-coloured from
youth, e.g. orange-red, bright red, carmine to dark red, soon cracking and then
coarsely rimose-areolate over the entire pileus surface, consisting of
a palisadoderm with weakly incrusted hyphae; both tubes and pores yellow,
slightly bluing or pale blue-greening when injured, pores in maturity relatively
large (about 1 mm); spores smooth and truncate; stipe light yellow to whitish yellowish,
in the middle sometimes dirty reddish, dirty red-brownish or wine-reddish;
context in the pileus and upper half of the stipe pale yellowish, when cut
slightly bluing. This species can be easily recognised by its red-coloured pileipellis
and the truncate, smooth spores. Such a combination of characters is quite exceptional,
not occurring in any other species of the Boletaceae.
B. marekii belongs to Boletus L. subgen. Xerocomus (Quél.) Maubl. and macroscopically
is rather similar to some species of the B. chrysenteron group, particularly
Boletus armeniacus Quél., Boletus ripariellus (Redeuilh) Watling and Boletus
fennicus (Harmaja) Šutara, partly also Boletus porosporus (Imler) ex
Watling, Boletus rubellus Krombh. and a reddish form of Boletus declivitatum
(C. Martin) Watling.