The organisms were found on wet, decaying deciduous tree logs. These were found inwards from the forest path on the left. Decaying leaves littered the ground around the rotting logs. Some were found on upright logs along the path.
very small version, so I'm not 100% on this ID
Saw this over a month ago in the same location
Ceratiomyxa sp. Rock Creek Park, Washington, DC, USA.
ID by leslie_flint