Herb Robert is usually pink with leaves tinged with red, and reddish stems. This appears to be the white form which is described as occasional although I have never seen it before. It is growing in the same field where we find the double/multiple forms of mayflower. There must be something in the soil (probably radon). Not quite as exciting as grizzlies and bald headed eagles but at least we know the names of the wild flowers around here.