iNaturalist page with local plants
rust weed – apparently suited to drier/sandy/well-draining conditions, seems to be relatively uncommon near Springberry. found this article: Rustweed – Three weird secrets
apparently resembles several similar plants: Old World Diamond Flower’s nearest report is in East Raleigh, near a creek a short distance along the trail from the end of Crabtree Blvd near N King Charles Rd; or maybe in Greensboro. Buttonweed can be found closer, in Meadowmont.
Fern-like small plants
Ebony Spleenwort seems to be in several places in the Mason Farm Biological Preserve, and in Meadowmont near the Southern Red Trailhead.