Ahnfeltiopsis gigartinoides (J.Agardh) P.C.Silva & DeCew
Annotated by S. C. Lindstrom, 23 Oct 1993. Remarks: University of Washington Friday Harbor Laboratories.

Washington: San Juan County: Goose Island, at the south entrance to San Juan Channel.
48° 27' N, 122° 57' W
Datum: WGS 84. Uncertainty: 1171 meters. Coordinate Source: Specimen Label, Digital Map.
On rocks in the lower intertidal and upper subtidal zones, frequently buried in sand. Thalli 10-20 centimeters high, deep red to purplish black in colour. The branched cylindrical or slightly flattened, up to 1 millimeter in diameter, and several times dichotomously branched. Substrate: saxicolous.

R. F. Scagel 6, Jun 21, 1955
FHL, Accession: 810, Barcode: FHL-A-01166