We're going on a flower hunt

In 2021 I discovered  a flower I did not know by the Glencorse reservoir.  I shared it on iNaturalist and was told to take a photo from a different angle.  I thought I had the spot marked on the map but could not find the plant.  It is a hempnettle but I am not sure which one.

Still we did have picnic by the river that comes out of the reservoir which was a nice spot.