Upper pitchers are throughout, being variably swollen in the upper portion. They are frequently produced, although Cheek and Jebb reported seeing a flowering specimen that lacked upper pitchers. Aerial traps are even smaller than their terrestrial counterparts and some of the smallest pitchers in the genus, reaching only 7.5 cm in height and 3 cm in width. Wings are reduced to a maximum width of only 4 mm with fringe elements up to 3 mm long, but may be absent altogether. The ventral surface between the wings or wing vestiges is usually slightly flattened. The peristome is often cylindrical and bulbous as in lower pitchers, but only up to 5 mm wide. It rises towards the rear, where it is broader. It bears ribs up to 0.5 mm high and spaced up to 1 mm apart, although in some specimens they are inconspicuous. The narrow peristome teeth are up to 1 mm long. The lid, which lacks appendages, is elliptic to ovate and up to 3 cm long by 2 cm wide. The unbranched spur reaches 7 mm in length.