. Contributions from the Osborn Botanical Laboratory. Plants. Vegetation of Northern Cape Breton. 323 especially northward. In the vicinity of Cape North and in other very exposed situations the mountain sides in some places are devoid of forest from sea level to a height of fully a thousand feet. Without doubt many of these areas were formerly wooded and their barren aspect has been induced primarily through the action of fire or human activity; but the continuance of this condition is attributable very largely to the retarding effect on succession of exposure to strong winds, frequently lade
. Contributions from the Osborn Botanical Laboratory. Plants. Vegetation of Northern Cape Breton. 323 especially northward. In the vicinity of Cape North and in other very exposed situations the mountain sides in some places are devoid of forest from sea level to a height of fully a thousand feet. Without doubt many of these areas were formerly wooded and their barren aspect has been induced primarily through the action of fire or human activity; but the continuance of this condition is attributable very largely to the retarding effect on succession of exposure to strong winds, frequently laden with. Figure 25.—Detail view of vegetation on exposed headland shown in Fig. 24; see text. Photograph by Dr. L. H. Harvey. salt spray. Wherever, on headlands of the sort pictured, there is a depression which affords shelter, scrubby forests are encountered, while scattered trees are commonly present in the barren area itself. These latter, as well as many of the trees which fringe the lower margin of the forest farther up the slope, are usually unsymmetrical in shape and dwarfed in size. Fre- quently the living part of the crown is wholly on the landward side of the tree. In some cases the predominant type of vegetation on these headlands is grass: species such as Danthonia spicata, Festuca rubra, and Deschampsia flexuosa. But more often (Fig. 25). 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 Osborn Botanical Laboratory. [New Haven?] Osborn Botanical Laboratory, Yale University
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