Broadleaf Plantain
Broadleaf Plantain has green, oval to egg-shaped leaves that grow in a rosette. They have thick stems that meet at a base and when the stems are broken, they reveal string-like veins that resemble those in celery.
They can produce a lot of seed so they spread across your property very rapidly. They also spread from one area of your lawn to another by hitching a ride when you mow your lawn.
If you only have a few plants they are easy to dig using a shovel. Best control is done in the fall using a herbicide that is labeled for broadleaf control like 2,4-D and several others.