Mistake, the little sticker balls are coming from some weed that grows on threadlike vines with tiny yellow flowers, not fron the ones with slightly thicker vines with salmon colored flowers. So I actually have three different knds of groundcovers that grow on very thin vinelike stems.

This is likely one of them, maybe you can ID the others from this site too...

Here is a link that might be useful: burrs

MorZ8, thanks for the link. I went through all the weeds and think two of mine are California Burclover and Scarlet Pimpernel, also known as poormans weather glass as it can be used to predict rain by whether the flowers are open or closed. I still have one other that may be chickweed but the pictures don't show a plant that has gone to seed. BTW, one Scarlet Pimpernel plant can produce 12,000 seeds. Whatever this weed is I think it will completely take over my lawn soon, but I don't mind as I think it is better than grass as its prettier and I don't have to mow it or even water it.

Californian, I was going to suggest it might be scarlet pimpernel, as my mom has some growing in her yard this year, and she loves the look of it, as well. When you said it was 4-petalled, it threw me off the scent, though. :D

Enjoy that beauty!

Brenda