Xerocomus porosporus

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Xerocomus porosporus

10 September 2020 Berkshire. Photograph copyright Leif Goodwin

Synonymns

Boletus porosporus

Cap

Convex, expanding with age, brown, felty when young, becoming smooth with age and cracking to reveal whitish flesh beneath, to about 7.5 cm across

Pores

Lemon yellow when young, becoming greenish yellow with age, large, angular, turning blue when bruised

Stem

Cylindrical to club shaped, finely lined, lemon yellow at the apex sometimes with a bright red band beneath, brown below, mycelium at the base white

Flesh

Soft and lemon yellow in the cap and stem apex, fibrous and brownish in the rest of the stem, not turning blue when bruised

Smell

Fungal, somewhat unpleasant

Taste

Fungal, somewhat unpleasant

Season

Summer to autumn

Distribution

Frequent

Habitat

In broadleaf woods, favouring oak

Spore Print

Olive brown

Microscopic Features

Spores spindle shaped, smooth, truncate at one end (12-17) x (4.5-6.5) µm2

Edibility

Edible, poor

Notes

This species is easily recognised by the truncate spores

Additional Photographs

Xerocomus porosporus

Spores in Melzer's solution viewed with a x100 immersion objective. 10 September 2020 Berkshire. Photograph copyright Leif Goodwin