Lorenz curves have been used to describe inequality in plant size and fecun
dity, where the total inequality is summarized by the Gini coefficient. Her
e we propose a second and complementary statistic, the Lorenz asymmetry coe
fficient, which characterizes an important aspect of the shape of a Lorenz
curve. The statistic tells us which size classes contribute most to the pop
ulation's total inequality. This may be useful when interpreting the ecolog
ical significance of plant size or reproductive inequality.