Thümen, Fungi Austr. Exs.
F.K.A.E.J. de Thümen [1-1200]

University of Illinois Herbarium
Catalog #: ILL00085821
de Thümen s.n.
Lactarius subdulcis var. pusillus Thüm.
Germany, Bohemia septentrionalis, in monte Mückenberg

USDA United States National Fungus Collections
Catalog #: BPI 760571
De Thumen, B. s.n.
Lactarius subdulcis (Pers.) Gray
Czech Republic, Bohemia Muckenburg

Rutgers University, Chrysler Herbarium - Mycology Collection
Catalog #: CHRB-F-0009854
Dr. B. de Thumen s.n.
Lactarius subdulcis var. pusillus Thüm.
Czech Republic, Bohemia;