Schiffner, Algae Marine Exs.
Schiffner, V.F. [1-1500]

University Herbarium, University of California, Berkeley
Catalog #: UC413818
H. Skuja #s.n. 20 August 1924
Ulva plumosa Hudson
Latvia, Lettland; Raigaischer Meerbusen, Bei Bulduri.

University of Michigan
Catalog #: 733211
H. Skuja #s.n. 20 August 1924
Ulva clathrata (Roth) C.Agardh
Latvia, Gulf of Riga, Bulduri