הזיהויים של adiamond

Outside the pasture on very wet ground in grass. The leaves on mag view have a visible midrib, but at 50x micro leaves are so boat-shaped I could not see it. About 1.4 to 2mm long, widely ovate. Teeth on margins. Curled tip. Cells are round.
I thought this is a moss, maybe P. cuspidatum, but Computer Vision does not make it a true moss, and I don't know where to look up a description.