Rhodoptilum plumosum
Annotated by Robert F. Scagel. Remarks: SYN.: Dasya plumosa Harvey and Bailey, 1851, p. 371; Dasyopsis plumose (Harvey and Bailey) Schmitz, 1893b, p. 231.

Washington: San Juan County: At the south end of Shaw Island, near Canoe Island.
48° 34' N, 122° 55' W
On rocks and epiphytic on other algae in the upper subtidal zone to a depth of 5 fathoms. 13. Thallus erect, 15-35 cm. high, irregularly branched, with several orders of branches bearing many short lateral branches all approximately the same length and arising distichously. Colour a deep rose red.

Robert F. Scagel 16, Jun 27, 1955
WTU, Accession: 248250, Barcode: WTU-A-012480