| 31. | The midrib and lateral leaf venation is only visible on the top surface.
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| 32. | Five parallel veins on the leaf, venation more evident under the leaf.
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| 33. | Leaf venation is more easily seen under the leaf.
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| 34. | Leaf venation is obscure, with the mid rib only being easily seen.
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| 35. | It has linear leaves with parallel venation and flowers in parts of three.
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| 36. | A seemingly random venation pattern is visible on the underside of the leaves.
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| 37. | The fourth instar has venation in its wing pads.
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| 38. | The adults in both orders display a particular wing venation pattern on their forewings.
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| 39. | He based his classification mostly on wing venation.
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| 40. | The venation patterns are different in different species.
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