Found this white flowering perennial growing near north beach, Seabrook Island.
Plant was growing in sand. The stems looked like a rose stem with
Thorns. Plant had creeped about 6-8 feet in one area – but saw pieces of it in many areas.
It was about 3” tall or so.
this is the southern dewberry, Rubus trivialis, which is very similar to the northern dewberry, Rubus flagellaris . It produces edible fruits like a blackberry.
Steve Hill, Ph.D., Botanist, SCNPS