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Fruiting bodies developed from the plasmodium from this observation:

https://www.inaturalist.org/observations/181223812

LE F-348758. RUSSIA, Murmansk region, the vicinity of the Tietta research station,
sphagnum bog with Pinus sylvestris L., on living grass and mosses, 67.600738°N, 32.996322°E, 25 VIII 2023, leg. Filippova A.V. and Bortnikov F.M.

see description in Novozhilov et al. 2023. Diachea racemosa (Myxomycetes = Myxogastrea): a new species with cespitose sporocarps from southern Vietnam and its position within the phylogenetic clade Diachea sensu lato (Physarales) // Protistology 17(4): 189–204.

First two photos by Phil Evans (5/7/20 & 5/8/20)
Rest by Fred Rhoades (5/12/20)
Stereo view is a Right-Left stereo (cross your eyes)
Micro views first at 400X second at 1000X showing spores (6-7 um, smooth) and peridial net.

Growing on oak bark. Maybe this is not the model of this species but reflect a special feature with old specimens living here for many time, at least more than 10 years, when I first discover them. the lirelas are wider and more voluminous than usual and seem to incorporate several partial growths.
For details about a similar observation from the same place 7 years ago please see https://mushroomobserver.org/199685.

This is so weird. Even the young ones are hard and curled in on themselves. Dark gills, growing on dead hardwood, probably oak or hickory, totally hardened but not dry, no deliquescence. I’ve been trying to ID these for a month.

Microscopy shows Jack-like feature in the pileipellis.
Also shows lamellar trama and spores

Dark purple scaly caps, becoming brown to almost black, cobweb veil, orangey rust spores. Flesh pale gray-violet, unchanging. In photo 3 the upper cap has a purple patch where it was hidden under the cap above and didn't get sun exposure. Slightly fragrant, fruity odor. Growing under and on decaying log but not apparently from it. Mixed woods, oak predominant. So beautiful I couldn’t stop taking pictures! Last photo same cluster 3 days later, caps darkened with only trace of purple where cap was hidden below another cap.

Immense transverse septate multicellular spores borne in clusters that are macroscopically visible, and the spores of which are even visible by setting scope. On unknown wood, heavily degraded and white rotted, with leucocogloea compressa.

What is this?? I think some sort of mold on a small volvate, white Amanita. I know and have found Mycogone rosea but this is much redder and darker, a beautiful color and true as pictured. Also quite wet. Update: It's a bacteria. See below. Last photo, a domestic habitat (shower stall)