| 11. | The mine is mostly positioned over a lateral vein.
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| 12. | Longitudinal section of sorus attached superficially beneath lateral vein ( V ) of pinnule.
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| 13. | The mid rib and lateral veins are visible on both sides of the leaf.
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| 14. | Unlike in other species, the lateral veins do not terminate in leaf serrations.
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| 15. | Midrib and lateral veins a pale green colour.
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| 16. | Lateral veins not clear on the top surface.
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| 17. | Leaf venation evident on both sides, 5 to 8 pairs of lateral veins.
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| 18. | However, the lateral veins are practically invisible.
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| 19. | The mine is created between two lateral veins.
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| 20. | Six or seven pairs of lateral veins.
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