Endocladia muricata (Endlichter) J.Agardh
Annotated by Robert F. Scagel.

Washington: San Juan County: Brown Island, near Friday Harbor.
48° 32' N, 123° W
Datum: WGS 84. Uncertainty: 527 meters. Coordinate Source: Digital Map.
On rocks in the upper intertidal zone and in tidepools. Thallus erect, profusely branched, with terete branches bearing numerous minute conical spines. Thalli from 2-6 centimeters high, frequently to 10 centimeters in tidepools. Usually dark red to brownish black in colour, but frequently greenish when in exposed tidepools.

Robert F. Scagel 1, Jun 20, 1955
WTU, Accession: 246193, Barcode: WTU-A-006451