Under conifer log.
On decaying pine log
Hemitrichia serpula. Rock Creek Park, Washington, DC, USA
Metatrichia vesparium. Rock Creek Park, Washington, DC, USA
San Diego County, California, US
Myxogastria or myxogastrids, formerly known as Myxomycota, is a class of Mycetozoa, itself a grouping of slime moulds, that contains 5 orders, 14 families, 62 genera and 888 species. They are colloquially known as the plasmodial or acellular slime moulds.