Description: Basidiocarps perennial, effused-reflexed to resupinate, 5-15 cm long, up to 5 cm wide and 4 cm thick, margin black, with several growing zones, pore surface receding, cinnamon brown, pores 5-7 per mm. Setae abundant, subulate to ventricose, straight, 25-37 x 6-9 µm, basidiospores cylindric, hyaline, 7-10 x 2-2.5 µm.

Distribution: Holartic in boreal coniferous forests. Widespread from continental to boreonemoral districts in Norway but absent from the western coast and suboceanic Trøndelag and Troms. The records from Finmark are dubious.

Ecology: Fructifies under extensively decayed trunks of lying coniferous trees, mainly Picea, which are moss-covered, soft and about to fall apart, often under the basal 1/3 of the trunk. Tolerates some logging. It can grow on Abies and Pinus in exceptionally mesic and fertile sites.

Remarks: Included in the Norwegian Red list. Status of threat: V+ (conservation demanding).

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