Paph gratrixianum (I think)

[emydura]

David, I think this is meant .... the middle vein of the leaf forms a third point/tip as you can see in my photo. You can also call it 3 teeth. But not all leave show this characteristic but the mayority does (at least of my plant). But I admit I havn't counted.

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Thanks Rudolf. That is a strange trait. Certainly none of my plants have it.