Fig. 3

Plant diversity across regions: The pie-donut charts show plant diversity across different regions, with plant orders represented in the inner pie and families in the outer donut, labeled with species counts. Percentages indicate the relative contribution of orders and families, with small or overlapping values omitted for clarity. (a) Subtropical Islands Flora. (b) Magellanic sub-Antarctic Islands Flora. (c) Sub-Antarctic Islands Flora. (d) Maritime Antarctic Islands Flora.