. The Canadian field-naturalist. Natural history. Figure 1. Riverside gravel bank in Gibbon's Park, London, Ontario. Clumps of both Saponaria officinalis and Silene cucubalus are present in this picture. Figure 2. A plant of Saponaria officinalis in flower on the same gravel bank. Figure 3. A plant of Silene cucubalus in flower on the same gravel 1 ;v ^â ' Figure 4. Regenerated rhizome fragments of Sapon- aria officinalis. On the left is a cm fragment, on the right is a cm fragment. Figure 5. Regenerated fragments of Silene cucu- balus. Note that shoots are produced only at the

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. The Canadian field-naturalist. Natural history. Figure 1. Riverside gravel bank in Gibbon's Park, London, Ontario. Clumps of both Saponaria officinalis and Silene cucubalus are present in this picture. Figure 2. A plant of Saponaria officinalis in flower on the same gravel bank. Figure 3. A plant of Silene cucubalus in flower on the same gravel 1 ;v ^â ' Figure 4. Regenerated rhizome fragments of Sapon- aria officinalis. On the left is a cm fragment, on the right is a cm fragment. Figure 5. Regenerated fragments of Silene cucu- balus. Note that shoots are produced only at the nodes; roots only at the extreme end of the fragment, distal to the stem 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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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnaturalhistory, booky