Figure 7.

Leaf morphology (A–C), photosynthetic rate (D,E), leaf nitrogen content per area (F), and soluble sugars and starch (G–I) in each leaf of Polygonum cuspidatum. See text for abbreviations. Open circles, gray triangles, gray rectangles, and gray diamonds denote HH, Def, LowN, and LowL, respectively. Numbers on the x-axes denote the leaf position (see text for details). A_growth and A_max were not measured in leaf 2 in LowN and LowL, while leaf 1 was additionally measured in Def. Values are means ± SE (n = 4–8).