This is an eastern and central North American species very similar to the European species, Plantain (Plantago major) . According to Minnesota Wildflowers, the native has purple bases to the leaf stalks and more elongated seed pods. Illinois Wildflowers mentions that the seed pods on the native species split open at the bottom, while the seed pods on the European species split open in the middle. The leaf stem and blade on the native are sometimes longer, up to 14 inches instead of 11 inches, but that's rare when the plants are growing in a regularly mown lawn.

I took a look at the plantains in my lawn, and so far it looks like I only have the native.

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