Nepenthes rafflesiana (Borneo)
The lower pitchers are cup-shaped with a round peristome showing characteristic teeth under the pitcher lid. The wings are broad and toothed.
The upper pitchers are very funnel-shaped and, like N. sumatrana, show a characteristic elevation in the peristome.
This form of Nepenthes rafflesiana has very pale, almost white, sparsely spotted pitchers with a reddish peristome.
Extremely interesting species for any lowland setup.