Glenn Gardner Hahn

• A nursery blight of cedars
• An undescribed Phomopsis from Douglas fir on the Pacific coast
• Blister rust susceptibility studies of naturally pollinated seedlings of the immune Viking currant
• Dasyscyphae on conifers in North America
• European larch canker (Dasyscypha willkommii (Hart.) Rehm)
• Failure of Dasyscypha willkommii and related large-spore species to parasitize Douglas fir
• Fungi as an international problem
• Hypertrophied lenticels on the roots of conifers and their relation to moisture and aeration
• Immunity of Canadian black currant selections from blister rust
• Immunity of Viking red currant from white pine blister rust under field conditions
• Larch canker
• Role of Dasyscypha willkommii and related fungi in the production of canker and die-back of Larches