Xerocomus

Notes

At least 7 indigenous species, and several exotic. Caps dry, finely felted. The genus is defined by the anatomical structure of the pores.
Of the native species Xerocomus griseoolivaceus occurs under tea-tree, the others all under Nothofagus. Each of these is mentioned below.
Of the exotic species, Xerocomus chrysenteron, occuring under exotic broadleafed trees, has a dry, irregularly-creviced cap which shows a red or pink colour in the crevices, red streaked stipe, and pores which rapidly turn blue where damaged. X. rubellus, red cap, under Salix. X. porosporus has been reported from under oak.

 

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Images		NZFungi Entry

Xerocomus macrobbii
The scaly cap and yellow base to stipe distinguishes it from X. rufostipitatus, which is also under beech and also has dark red pores and a reddish stalk. X. rufostipitatus has a dark brown cap.

Xerocomus griseoolivaceus
The only species of Xerocomus found under tea-tree. Characterised by the dull colours. The Nothofagus-associated Xerocomus lentistipitatus is also dull-coloured, but the cap is brownish rather than greyish.