Golden ragwort (Packera aurea) blooms prolifically during spring and early summer in moist places throughout central and eastern North America.

The basal leaves in spring . . .

, , ,  become more numerous . . .

. . .  and then grow larger, with prominent toothy margins, in the summer.

Watch this video of one year in the life of Golden ragwort (Packera aurea) to observe its two strikingly different types of leaves growing on the same plant, to see close views of its golden flowers, to discover how the leaf underside can vary in color from plant to plant, and to learn some cool botanical terms like "achene" and "pappus."

(Here's the same video as posted on YouTube.)