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Systematic and leaf-specific data for the five species sampled
| Species | Group | Family | Leaf/Pinna size (cm2) | Conduits in 1° vein |
| Adiantum capillus veneris | Fern | Pteridaceae | 0.29 | 33 |
| Pteris cretica | Fern | Pteridaceae | 9.98 | 58 |
| Goniophlebium formosanum | Fern | Polypodiaceae | 0.49 | 15 |
| Eucalyptus globulus | Angiosperm tree | Myrtaceae | 47.55 | 879 |
| Quercus robur | Angiosperm tree | Fagaceae | 28.20 | 231 |
The sum of xylem conduits in the base of the midrib in each leaf or pinna is shown for xylem conduits >3 µm.
