Water Crowfoot at Upwood Meadows

Water Crowfoot at Upwood Meadows

Observation - Water Crowfoot at Upwood Meadows - UK and Ireland. Description: I understand that this is a difficult group, but maybe someone can suggest the species. All the leaves appear to be submerged, but maybe it is early in the season for aerial ones.

I understand that this is a difficult group, but maybe someone can suggest the species. All the leaves appear to be submerged, but maybe it is early in the season for aerial ones.