Nepenthes sibuyanensis (Sibuyan, Philippines)
The peristome looks very similar to that of N. ventricosa and is broad, serrated and ribbed. The color of the pitchers are usually a light orange or pink and the color of the peristome red or brown with great variability in brightness.
High pitchers are slightly more elongated and can turn almost completely white.
The robust and vigorous nature coupled with the huge, shapely base cans make this species a recommendation without reservation.