"A tissue-cultured mutation. The teeth are few and fused together by "webbing."" Savage Garden:66 (1998)

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From : https://cpnames.carnivorousplants.org/Cultivars.php?name=Dionaea

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Note: The real 'Fused Tooth' will produce, around the fall, traps with very fused teeth, forming a single large triangle (see photo). Dionaea with fused teeth are relatively common. Only this characteristic will allow you to confirm that it is indeed the 'Fused Tooth' registered with the ICPS.