I've searched online but can't seem to find the exact match for this weed. Can anyone help? They are in small clumps, but there are tons of them popping up (see second pic). They are almost starting to be complete ground cover. I'd like to get rid of them, but they surround the ground where I have about 10 trees planted, so I am concerned about using any weed killer on them. This is in Albuquerque, New Mexico.

Thank you!