Passerina?
Diaz Cross Memorial beach, Addo Park, near Bushman's river mouth/Boknes. Large white dune veld, actively moving sand, seaward side of consolidated dunes covered with coastal thicket (Tarchononthus, Chrysanthemoides, Pterocelastrus). Growing on dunes with Passernia, Myrica cordifolia, Chrysanthemoides, plants galled, tall, bases buried in sand. On steep, less exposed moister dunes. Likely a new species in Seriphium based on massively-parallel sequence data