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

University of Wisconsin - Madison
Catalog #: WIS-B-0042321
P. Dusén #s.n. 16 March 1892
Callicostella (Müll. Hal.) Mitt.
Cameroon, Ad Ekundu N'dene emporium