. The Canadian field-naturalist. . Alf Erling Porsild Photograph taken in 1959 by H. M. Raup on an aircraft during the arctic field trip of the IX International Botanical Congress. 298. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club

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