Browse Items (4334 total)
- Collection: Ken Armson fonds
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Cronartium comptoniae (sweetfern blister rust) on 2 year jack pine.
Cronartium comptoniae (sweetfern blister rust) on 2 year jack pine. N.B. aeciospores.
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Cronartium comptoniae (sweetfern blister rust) on 2 year jack pine.
Cronartium comptoniae (sweetfern blister rust) on 2 year jack pine. N.B. aeciospores.
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Cronartium comptoneae rust showing aeciospores.
Cronartium comptoneae rust showing aeciospores on jack pine.
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Cronartium comptoneae rust showing aeciospores.
Cronartium comptoneae rust showing aeciospores on jack pine.
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Cronartium comptoneae (sweetfern rust).
Cronartium comptoneae (sweetfern rust) on jack pine seedlings.
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Cronartium comptoneae (sweetfern rust).
Cronartium comptoneae (sweetfern rust) on jack pine seedlings.
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Stump of black walnut auctioned off for $5,050.00, 1973.
Stump of black walnut auctioned off for $5,050.00, 1973. Persons are Mr. Bev Finch (owner of woodlot) and Mac Thompson.
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Outstanding X poplar (cottonwood).
Outstanding X poplar (cottonwood). Person is Bill Raitenanen. Aylmer.
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Jack pine planted 1964, 9 years. Site of University of Toronto studies.
Jack pine planted 1964, 9 years. Site of University of Toronto studies. Davidson Township. Engelhart Management Unit.
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Strip cutting in white pine.
Strip cutting in white pine. N.B. Final strip (4th) still to be cut. Joan Peninsula, Lake Temagami.
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