Blister rust on jack pine. Silviculture 444a 491b
Title
Blister rust on jack pine. Silviculture 444a 491b
Subject
Forest Products Industry
Description
Cronartium comptoniae (Sweetfern blister rust) cankers on 50 yr jack pine. Cairo-Flavelle Twp. Engelhart Management Unit.
Creator
Ken Armson
Date
1970-06
Format
JPEG
Type
Photograph
Identifier
Ken Armson-Silviculture- 444a
Coverage
Canada - Ontario
Original Format
Photo
Files
Collection
Citation
Ken Armson, “Blister rust on jack pine. Silviculture 444a 491b,” Archives & Digital Collections at Lakehead University Library, accessed October 23, 2026, https://digitalcollections.lakeheadu.ca/items/show/4692.