Fig. 2. Mean (±1 s.e.) length (A), basal diameter (B) and number of leaves (C) of sibling growth units of N. dombeyi (closed symbols) and N. pumilio (open symbols) developed in different positions on their parent growth units and grouped according to the rank number of the parent growth unit nodes (counted from the parent growth unit’s proximal end) from which sibling growth units derived. Data corresponding to parent growth units of main branches, secondary branches and short branches are shown separately.