Cape Lookout NS: western Shackleford Banks; take ferry to public dock on island; walk sandy trail into interior and head SE to high dunes where you can see to the SE a fenced area of about 50x50 m with posts every 10 feet.
the plot is in a horse exclosure created by the park service; formerly heavily grazed by wild horses, the surrounding dunes have no flowering bluestem or sea-oats; in exclosure bluestem is abundantly flowering; there are a dozen of 2 inflorescences on sea-oats