[1] This bolete was described and given the scientific name Xerocomus porosporus in 1958 by Louis Imler (1900 - 1993), who was the founder of the Antwerp Mycological Circle.

The currently accepted scientific name Xerocomellus porosporus dates from a 2008 publication by Czech mycologist Josef Å utara, whose studied in detail morphological character of this and other closely related boletes – since further supported by DNA studies.

The tubes are 13 to 20 centimetres (5.1 to 7.9 in) long, initially lemon yellow, later olivaceous, and they bruise bluish.

The pores are narrow, 0.2–0.5 mm in diameter, angular, lemon yellow, and darken later.

[7] Xerocomellus porosporus appears occasionally in the autumn, and grows singly or in small groups in mixed deciduous woods, particularly with oak, hornbeams, and beech.