Narrow distribution. Only known from Solomon Islands (from Reef Islands). On betel nut. An important disease of unknown cause.
Yellow spots, up to 2 cm wide, starting on leaves 6 or 7; long red vertical lines of rot, 1-2 cm wide, on the trunks, narrowing to the growing point, where cavities are filled with gum. Flowers and buds rot. Palms die, mostly before they produce fruit.
Molecular tests have shown presence of Coconut cadang-cadang viroid-related nucleic acids, but it is not known if these are the cause of the disease.
Cultural and chemical control: none can be suggested until the cause of the disease is known.