This weed grows low to the ground and creeps out from the center. The roots
are fairly short, about 1 1/2-2 inches deep. There are double small leaves
about 1/4 inch then a lot of smaller double leaves with tiny seeds growing
at their base. It seems rather invasive but doesn't move into the grass. I
have it growing on the outskirts of my yard and now it's also growing around
my veggie garden. I'm in Eastern WA, zone 5, if that helps. Thanks. Oh,
almost forgot, here's a picture of it:
http://ajgraphics.netfirms.com/unidweed.html

Leslie