Dusén, Musci Afr. Camerun.
Per K. H. Dusén [1 - 921]

University of Wisconsin - Madison
Catalog #: WIS-B-0042322
P. Dusén #s.n. 00 March 1892
Callicostella (Müll. Hal.) Mitt.
Cameroon, Ad N'dian emporium