Very large compared to the diatoms we observed - need to figure out how to add scale bar on new microscope, will update

I wish I had the slightest idea what this is...

Bioluminescent glow in sand at night. Collected sand and did microscopy. The dominant Dinoflagellate was this organism.

12 μml ong
50 μm at widest location

On native giant reed. Tentative ID. People I've talked to in the MN DNR who are Invasive Species Specialists report that this fungus doesn't affect the non-native population here in the state

Elm/Ulmus

It’s on a Gledista (Honey Locust)

I believe this is fungal in origin with spore capsules at the termini. The strands are about 2 inches (5 cm) in length. Growing from (possibly) bird droppings in an outdoor flower pot.

???

Puccinia cnici-oleracei?

Host: Vernonia (Ironweed)