Flower:

A single flower 1 to 2 inches across is at the end of a long, mostly naked flower stalk at the top of the main stem, sometimes branching from leaf axils near the top of the plant. Individual flowers have 15 to 35 white petals (ray flowers) and a golden yellow button shaped disc in the center, up to ¾ inch across.

Leaves and stem:

Stem leaves near the base of the plant are up to 5 inches long and ¾ inch wide, generally spatula shaped with narrow lobes or large teeth and little or no leaf stem. Leaves become smaller and more linear as they ascend the stem. Attachment is alternate and widely spaced. There is also a tuft of stemmed spoon-shaped basal leaves. The main stem is mostly hairless, and angled or furrowed. One plant can have up to 40 stems.

Notes:

Ox-eye Daisy is easily recognizable, commonly found in gardens all across the US. It is not native, however, brought over from Europe in the 1800s. It escaped into the wild and has become an aggressive, invasive breeder, forming dense colonies with its fibrous root system and crowding out native plants. Each flower produces up to 200 seeds.