Saxifraga virginiensis; Saxifragaceae (saxifrage family)
Birders have a phrase they use to summarize small, hard-to-identify birds: Little Brown Jobs. Sometimes it’s used dismissively: “Did you see anything interesting?” “Nah, just a bunch of LBJs”.
Likewise I have a tendency to overlook Little White Flowers. I’m not really being dismissive – I just see them from 5 feet off the ground while hiking and think “yay, another cress or chickweed, big deal”. I learned my lesson with harbinger-of-spring; now I hike more slowly and pause often to bend down and have a look.
The picture illustrates why I really need a macro lens to continue this hobby. It’s not very good, but it’s the cleanest shot I could get of this little plant.