Perhaps Lychnis chalcedonica.

Thanks. Maybe that's what it is after all.

The foliage looks more like silene to me, maybe S. virginica or laciniata.

Well, I guess it's one of them. Since I have both, I'll have to compare. At the moment I'm leaning toward the Silene because of the delicate foliage.

Thanks for your help.

I agree with the lychnis chal., and it appears that the stem in leaning on foliage of a different plant, if I'm not mistaken.

Lychnis chalcedonica has flowers in ball-like clusters. Since the photo shows a single flower, I think it's a silene. Also, the foliage looks identical to that of my silene virginica.

Your reason is the reason I thought it was not Lychnis chalcedonica. Since I have Maltese Cross in another section of the garden I took flowers and leaves from the mystery plant and examined them next to the known plant.

They are virtually the same. The color, texture, shape of the leaves and petals all match. The difference was the delicate plant versus the very sturdy plant that grows elsewhere. I decided that since the "volunteer" was new it was just delicate and not fully developed. It came up in what's supposed to be my new strawberry patch. Many volunteers showed up there since the strawberries have been slow to take hold.

Thanks for your input. I really appreciate it.