This plant can be found in moist environments in the eastern part of the United States. When you can identify it, please leave its common and scientific names in a comment below. Even if you do not recognize it from personal experience, see if you can narrow down its name to the family or genus.
ANSWER (subsequently added to this post to facilitate the “search” function for these images): Branch lettuce (Saxifraga micranthidifolia)
Bog saxifrage, saxifraga pensylvanica. Recognized the basal leaves to genus, but, I admit, had to cheat a little with Google images, to get the species! Don’t believe I’ve ever found it in the wild, here in central NY. Thanks for the challenge.
Richard, you are “oh so close” with your identification. This is actually Branch lettuce (Saxifraga micranthidifolia).