Figure 1
From: Scale-invariant structure of size fluctuations in plants

Definition of size fluctuation.
(a) Typical plants from a crop of maize (Zea Mays L.) grown in southern Brazil. (b) Successive plant size, S (height in centimetres), measured in a linear stand for the AS 1570 hybrid. (c) Successive size increments, Z1 = Sk+1 − Sk, obtained from the series shown in (b).