Observaciones de gwenlh

I noticed this very bluish fungus on Trametes, on a standing dead alder.. The earliest stage seemed to be pale powder covering the Trametes and I unfortunately did not capture that. The end stage was clearly the black layer showing in photo 4. iNat's suggestions included Nectriopsis violacea - didn't seem likely though.

I saw a queen (likely B Vosnesenskii) in this area, foraging on heather the day before but she was too quick for me to photograph. This could be the same bee - when I saw her on this day she was crawling on the ground, exploring under plants as if looking for a nest site.

Mystery! iNat suggested the genus. From the reading I've done this could be a truffle or a false truffle, but if that's correct it should have been growing underground, rather than in the crotch of a dead (standing) alder. Photo 2 shows the fungus as found. No stem, no visible point of attachment. Rather, the underside was coated with a cottony layer, which can also be seen on the tree in photos 2 and 3. It looked like there had been a second fungus removed from there. This looked like a puffball nested in moss - had I not been looking for the moss I would never have seen it.

Best guess, based on colours and feathery-looking leaves. On untreated wood of a bridge railing along a spawning channel. I removed a small part with a putty knife to try to photograph the under side - that photo is quite large so scrolling around may be helpful.

On shaded moist rock. Leaf shape and margins suggest Scapania to me, but I've not seen the mixture of green and purple leaves elsewhere. Rather bedraggled strands hanging down the rock. Only two plants apparent so I did not collect anything to try to photograph the underside. Photo 2 shows my attempt to prop one branch to expose the underside without damaging the plant. Some of Rambryum's S. umbrosa photos are the closest I could find to this.

My best guess. The colour, opposite leaves and sprawling character seem like Frullania, but this is much smaller than the F nisquallensis that I have observed. Also, this has what I have seen described as "Flagellate branches" which I have seen only in photos of F. bolanderi: see @
Rambryum's https://inaturalist.ca/observations/185909458. This plant was so small it was hard to photograph. Individual leaves seem to be about .2 mm at most.

I'm not sure of the bark on this dead standing tree but the surrounding trees are a mix of black poplar and cedar. Spotted by my walking partner Teagan a bit above eye level. Appeared black on site but the sample we collected and I photographed at home is clearly brown, with a short stem at attachment point. The photo of the tree stem includes at least 8 specimens.