Sarcodiotheca gaudichaudii (Mont.) P.W. Gabrielson
Annotated by Paul W. Gabrielson, 9 Apr 1991. Remarks: University of Washington Friday Harbor Laboratories

Washington: San Juan County: South end Shaw Island, near Canoe Island.
48° 34' N, 122° 55' W
On rocks in the subtidal zone to a depth of 5 fathoms. Description: Thallus up to 35 cm. high, brownish red to deep red in colour, with a few main axes and numerous shorter laterals tending to lie in one plane. All orders of branching terete, generally 3-5 mm. in diameter but frequently up to 5 mm. in main branches and at the base. Thallus cartilaginous.

R. F. Scagel 18, Jun 27, 1955
FHL, Accession: 802, Barcode: FHL-A-03404, 14