Synonym: Tricholomopsis osiliensis Vauras
Morphologically similar taxa are T. badinensis Holec, Kolařík & Kunca (found only from Slovakia) and North American T. flavescens (Peck) Singer (see Saar & Voitk 2015).
Species with sulphur to lemon yellow fruitbodies, with smooth to fibrillose cap; growing on Picea abies or Abies alba trunks in natural to old-growth coniferous/ mixed forests. It has small number of localities in the temperate and boreal zones of eastern North America and Europe.
Growing on temperate and boreal zones of eastern and western North America (Canada, USA) and Europe (France, Estonia, Poland, Slovakia, Spain, UK).
There are 113 occurrences in Gbif.org (63 USA, 18 Canada, 22 Estonia, 3 UK, 1 Spain, 1 France, 2 Slovakia) and one sequenced specimen from China (UNITE). Observations from Norway (1) and Russia Moscow region (Holec et al. 2019).
Mature individuals ca 230, estimated population size 2-3-fold higher, up to 700 mature individuals. Estimated decline of population size due to habitat and substrate loss during 2 generations (20 years) is 20%.
Preliminary assessment: VU C1, D1
Species is saprobic on Picea and Abies trunks, found only from natural, old-growth or virgin forests rich in dead wood.
Decrease of the area of natural, old-growth and virgin spruce/ fir forests, also amount of available substrate is decreasing (Picea/ Abies fallen trunks with diameter of more than 20 cm).
Retaining fallen spruce/ fir trunks in older commercial forests.
Not known as edible.
Holec J, Kunca V, Kolařík M. 2019. Tricholomopsis badinensis sp. nov. and T. sulphureoides—two rare fungi of European old-growth forests. Mycological Progress 18: 321-334.
Saar I, Voitk A. 2015. Type studies of two Tricholomopsis species described by Peck. Mycological Progress 14(7): 46.
Tricholomopsis sulphureoides (Peck) Singer in GBIF Secretariat (2019). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2020-02-12.
UNITE: Tricholomopsis sulphureoides (Peck) Singer | SH1177849.08FU. Available at: https://unite.ut.ee/bl_forw_sh.php?sh_name=SH1177849.08FU#fndtn-panel1