Nepenthes mirabilis var. echinostoma  
N. mirabilis var. echinostoma is an extreme variant of the more common N. mirabilis and is found exclusively up to an altitude of about 200m in Brunei on the island of Borneo. It differs from N. mirabilis in several respects, but particularly in the raised teeth on the peristome that give rise to it's name. It is easy to cultivate but has soft leaves lacking a protective waxy layer and is therefore not tolerant of extremes such as low humidity.
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