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

University of Wisconsin - Madison
Catalog #: WIS-B-0049261
P. Dusén #s.n. 00 March 1892
Trichosteleum
Cameroon, Nord-Ouest, Ad Ekundu N'dene emporium