United States, Washington, San Juan, American Camp Beach, on the southwest side of San Juan Island.
48.45 -122.983333
48° 27' N, 122° 59' W
Growing parasitically on Odonthalia floccosa (Esper) Falkenberg in the lower intertidal zone.
parasitic
Thallus up to 2 mm. in diameter, creamy white in colour, forming small tuberculate aggregations, especially in the lower portions of branches of the host. Origin: .