Wittrock & Nordstedt, Algae Aquae Dulcis Exs.
Wittrock, V.B.; Nordstedt, C.F.O. [1 - 1200]

Miami University - Algae
Catalog #: 000211354
s.n.
Penium digitus Brébisson ex Ralfs

University Herbarium, University of California, Berkeley
Catalog #: UC759289
O. Nordstedt #s.n. 11 July 1885
Penium digitus Brébisson ex Ralfs
United Kingdom, Aberdeenshire, Slewdrum [Banchory]