. The Canadian field-naturalist. 256 The Canadian Field-Naturalist 39 40 _4I Vol. 87 42 494 493 492. 490 Figure 1. Localities at which specimens reported in this paper were collected. A. Lake Opinicon. B. Pitch pine ridge near Morton. C. Jones Falls. D. Rock Dunder. E. Dunders Mate and Whitefish Lake. F. Washburn Cliff. G. Kingston Mills. H. Mt. Fitzsimmons. I. Dean Island. J. Charleston Lake. the snow may melt completely in any winter month. Locally, the climate seems to be extremely variable, being influenced by the rugged land- scape of dry rocky ridges and swampy valleys with numerous fros
. The Canadian field-naturalist. 256 The Canadian Field-Naturalist 39 40 _4I Vol. 87 42 494 493 492. 490 Figure 1. Localities at which specimens reported in this paper were collected. A. Lake Opinicon. B. Pitch pine ridge near Morton. C. Jones Falls. D. Rock Dunder. E. Dunders Mate and Whitefish Lake. F. Washburn Cliff. G. Kingston Mills. H. Mt. Fitzsimmons. I. Dean Island. J. Charleston Lake. the snow may melt completely in any winter month. Locally, the climate seems to be extremely variable, being influenced by the rugged land- scape of dry rocky ridges and swampy valleys with numerous frost pockets. Close to Lake Ontario the climate is slightly more "oceanic" because of the moderating in- fluence of the lake, the climate becoming more continental northeastward. This is shown by an increase of the temperature amplitude of the monthly means from to ° Centigrade over a distance of 50 km. The amplitude of the extremes increases over the same distance from to ° Centigrade. These values were interpolated from the maps of Putnam and Chapman (1938). The area is included within the eastern sec- tion of the Great Lakes - St. Lawrence forest region of Rowe (1959), the beech-maple forest of Knapp (1965), and the hemlock-white pine northern hardwoods region of Braun (1950).. 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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