Great idea, @graysquirrel, and I’m glad you are doing microscopy and posting it. I’ve been doing this with Sphagnum mosses and have over 300 observations posted with microscopic images. Nearly all are identified to species, but many aren’t seconded yet. I also made a project of other people’s Sphagnum observations “with slides,” though this also includes non-slide observations by the same people. The project is
https://www.inaturalist.org/projects/sphagnum-with-slides
and my Sphagnum observations (mostly with slides) are
https://www.inaturalist.org/observations?place_id=any&subview=map&taxon_id=54704&user_id=janetwright&verifiable=any.
I will try to add some of the RG ones to your project.