. The Canadian field-naturalist. May, 1925] The Canadian Field-Naturalist 101. Figure 7.—FASCIATION IN SUBSTITUTE BRANCH-LEADER AND IN PROSTRATED PRIMARY AXIS OF FIRS. Left cross-section of a substitute branch-leader where several of the branches have become equally nearly vertical in direction of growth. Right cross section of horizontal portion of sub- stitute branch-leader. See Fig. No. 9. of the stump had remained vital as can be seen in the illustration. The capping, therefore, was likely to have been formed in the first instance by the sprouts. At the time the specimen was secured the sp
. The Canadian field-naturalist. May, 1925] The Canadian Field-Naturalist 101. Figure 7.—FASCIATION IN SUBSTITUTE BRANCH-LEADER AND IN PROSTRATED PRIMARY AXIS OF FIRS. Left cross-section of a substitute branch-leader where several of the branches have become equally nearly vertical in direction of growth. Right cross section of horizontal portion of sub- stitute branch-leader. See Fig. No. 9. of the stump had remained vital as can be seen in the illustration. The capping, therefore, was likely to have been formed in the first instance by the sprouts. At the time the specimen was secured the sprouts were dead, but the capping was vital. The retention of vitality in the stump must have been due to the root graft but such vitality did not extend to any part of the sprouts! The sprouts had sprung from below the cut of the stump and were probably there at the time of felling. Lateral adventitious shoots often develop on the stems of Grand fir. They are necessarily plagiotropic initially and are then dorsi-ventral in symmetry but they often become orthotropous as they grow older and at the same time change to radial symmetry. Tropisms of the Garry Oak {Quercus Garryana Hooker). The Garry oak is the sole species of oak native to the Province of British Columbia and it occurs only on the southern portion of Vancouver Island and some of the adjacent small islands. It is very plentiful close to Victoria where it forms an out- standing feature of the landscape. Its maximum size so far north has been commented on as not at all like a species nearing the limit of its range. When the tree grows in upland and rockland environment, its stem and limbs assume very fantastic shapes with multitudinous contortions,. 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
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