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

University Herbarium, University of California, Berkeley
Catalog #: UC413822
H. Skuja #s.n. 17 August 1924
Ulva erecta (Lyngbye) Fries
Latvia, Lettland; Raigaischer Meerbusen, Ragaciems.

University of Michigan
Catalog #: 733228
H. Skuja #s.n. 17 August 1924
Ulva clathrata (Roth) C.Agardh
Latvia, Ragaciems, Gulf of Riga