Identification of white flower with four petals

Question

Just wondering what this is. Found it in an old pot out back and not sure if I should toss or save. TIA

Please see my answer below. Does the distribution of this species match your location? — Ben W, Commented Sep 13, 2017 at 22:51
@Samantha If you think it's the right answer (I think it is), it's helpful to mark it as accepted (the check mark under the voting arrows). Thanks! — J. Musser, Commented Sep 14, 2017 at 17:02

J. Musser · Accepted Answer · 2017-09-14 17:00:50Z

4

It's in the family Rubiaceae. Diodia virginiana looks like a good match.

J. Musser

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answered Sep 13, 2017 at 22:48

Ben W

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