You may or may not want to feel guilty for calling this uncommon but
widespread native plant a weed. If it was a bit more showier, it would be
grown as a garden plant.

It is Diodia virginiana L., commonly called "Buttonweed".

http://www.missouriplants.com/Whiteo...iana_page.html

http://www.ct-botanical-society.org/...iodiavirg.html

http://fp.bio.utk.edu/botany/Botany_...t.su00/New%20w
ebpage/Rubiaceae/Buttonweed.jpg


The paired leaves and four petaled white flowers are characteristic.

Since it is a plant that favors wet soil, your lawn is probably getting a
bit too much water.




Phisherman wrote in message
...
Here's a scan of two of the weeds
http://home.att.net/~g.popa/weed.jpg

A few days ago I said ...
I'm having some difficulties finding pictures of a weed that is
difficult to irradiate in my lawn. It grows on wirey stems with light
green fleshy leaves. The leaves have a smooth edge and pointed. The
small white flowers have four petals. It grows flat, on top of the
grass, and the mower blades miss this weed. Handpulling just breaks
the plant off at the base, and it quickly grows back in a week. It
grows in full sun. I control it by painting it with RoundUp, but that
is laborious. Unlike most weeds, it does not mind growing on top of a
thickly planted lawn. Any ideas what this could be? Thanks