Fig. 3

The scaling relationship between leaf dry mass and leaf surface area. The small point represents the observations of the log-transformed leaf dry mass vs. the log-transformed leaf area, and the straight line represents the fitted regression line based on the ordinary least-squares method. CI represents the 95% confidence interval of slope of the fitted linear equation; r² represents the coefficient of determination that is used to indicate the goodness of fit; and n represents the sample size, namely total of sampled leaves. The red points represent the observations of 6 Bambusa species; the green points represent the observations of 10 Chimonobambusa species; the blue points represent the observations of 42 Phyllostachys species, varieties, forms, and cultivars; the light blue points represent the observations of 12 Pleioblastus species; and the gray points represent the observations of the remaining species of genera having less than five species