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<strong>Vertical</strong> <strong>Vegetation</strong> <strong>Structure</strong> <strong>Below</strong> <strong>Ground</strong>: <strong>Scaling</strong> <strong>from</strong> <strong>Root</strong> to Globe 373Zwieniecki MA,Newton M (1995) <strong>Root</strong>s growing in rock fissures: their morphologicaladaptations. Plant Soil 172:181–187H. Jochen SchenkDepartment of Biological ScienceCalifornia State University FullertonP.O. Box 6850Fullerton,California 92834-6850,USATel.: +1-714-2783678Fax: +1-714-2783426e-mail: jschenk@fullerton.edu