Serration of Margins

Biology and Chemistry of Jerusalem Artichoke Helianthus tuberosus L. 

FIGURE 4.1 (A) Leaves are generally lanceolate to lance-ovate in shape but differ considerably among clones. (Redrawn from Tsvetoukhine, V., Ann. Amelior. Plant., 10, 275-308, 1960 Kays, unpublished data.) (B) In addition, there is generally considerable variation within an individual plant, as illustrated by changes in shape moving up the main stem (nodes 4 to 16), on lateral branches and on a flowering stem. 

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