此外,还有两种关于二齒豬籠草的人工雜交種已被命名。贝拉猪笼草(Nepenthes 'Bella',(N. ampullaria × N. bicalcarata) × N. truncata)及拉帕猪笼草(Nepenthes 'Rapa',N. ampullaria × N. bicalcarata)。[68]但因為其發表時未附带描述,所以這兩個人工雜交種的名称是非正式的。[8]
Then there is N. bicalcarata, a most robust habited kind with sturdy foliage and bag-like pitchers provided with a vicious-looking rat-trap-like apparatus in its lid which renders it very distinct from its neighbours.
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