Collins, Holden & Setchell, Phycoth. Bor.-Amer.
Collins, F.S.; Holden, I.; Setchell, W.A. [1-2300]

Brown University - Algae
Catalog #: ABRU00003841
W. A. Setchell s.n.
Soranthera ulvoidea f. difformis Setchell & N.L.Gardner
United States, Alaska, Unalaska, AK

Drexel University, Academy of Natural Sciences - Algae
Catalog #: PH00231233
021e9ad0-9269-4482-a125-42a7375d2b76
W. A. Setchell; A. A. Lawson #s.n. 00 August 1899
Soranthera ulvoidea f. difformis Setchell & N.L.Gardner
United States, Alaska, Unalaska, AK

University of Michigan
Catalog #: 638997
W.A. Setchell #s.n. 00 August 1899
Soranthera ulvoidea Postels & Ruprecht
United States, Alaska, Unalaska

University of Michigan
Catalog #: 639003
W.A. Setchell #s.n. 00 August 1899
Soranthera ulvoidea Postels & Ruprecht
United States, Alaska, Unalaska Island, Aleutian Islands, Alaskan Peninsula

Field Museum of Natural History
Catalog #: C0518154F
W.A. Setchell #s.n. 00 August 1899
Soranthera ulvoidea f. difformis Setchell & N.L.Gardner
United States, Alaska, Unalaska

Michigan State University Algae
Catalog #: MSC0184716
W.A. Setchell #s.n. 00 August 1899
Soranthera ulvoidea f. difformis Setchell & N.L.Gardner
United States, Alaska, Unalaska

Miami University - Algae
Catalog #: 000188122
W.A. Setchell #s.n. 00 August 1899
Soranthera ulvoidea f. difformis Setchell & N.L.Gardner
United States, Alaska, Unalaska

Yale University Herbarium
Catalog #: YU.092213
William Albert Setchell s.n. 00 August 1899
Soranthera ulvoidea Postels & Ruprecht
United States, Alaska, Unalaska, AK