By a small pond
No interactions present.
I am agreeing in an aggregate sense. It could also be R. microphylla or the hybrid. I would need fruits to tell.
with iSpot's recommended binomial. It looked like watercress to me.
but unfortunately there are 3 of them! Now gone back to being called Nasturtium (officinale), but that is another story!
Lat/Lng: 54.7198, -1.2589
OS grid ref: NZ478363