snjezanadacic's Identifications

Very similar to the other tentatively identified as Leccinum fallax, perhaps more slender, could be the same species. Separated on the basis that, while the color changes are similar, there is not fast and dramatic change to blue at the bottom of the stipe, and the spores are somewhat larger with a larger Q average too.

With spruce.
Flesh white. Color change: Slowly to pink/vinaceous and then to fuscous
Spores 14.0-17.0 x 3.7-4.7;
Spores on aver: 15.5 x 4.0, Q=3.87;
(while the other identified as L. fallax has spores on aver: 12.8 x 3.6, Q=3.54.

On sagebrush, Artemisia tridentata, at the base of the foothills.
Appears abundant.
Size 3.5 x 2 cms.
Pores angular 3-4 pores per mm. (pic 4, caliper opening 5 mm).
Spores broadly elipsoid, smooth, hyaline, (5.5 - 6.3) x (4.2 -5.0) This is a little larger than described.
Basidia broadly ovoid 10-12 x 6-8 (Pic7, basidia looks like spores but is a little larger and elongated, count 3+)
Setae rare, thick walled, ventricose with a sharp point 24 x 9. (Pic 6)
The sample has some Xanthomendoza lichens on it, if selecting for DNA sampling, care should be taken selecting a contaminant free sample. Contaminant spores are visible on pic9 (last) with some two septa foreign spores.

Ref.: Phellinus artemisiae sp. nov. (Basidiomycota, Hymenochaetaceae), from western
USA, J. Vlasak and J. Vlasak Jr.; 2017.