Rosette and lower pitchers are generally ovoid, sometimes being slightly cylindrical in the upper part. They are some of the largest in the genus, reaching 40 cm in height and 15 cm in width. Exceptionally large pitchers can hold more than a quart (946 ml) of fluid. A pair of fringed wings (≤15 mm) runs down the front of the pitcher. The waxy zone of the inner surface is reduced. The pitcher mouth is ovate, slightly raised towards the rear, and has an oblique insertion. The impressive peristome of this species is greatly expanded at the sides (≤25 mm wide) and often has margins. Its inner edge is lined with short but distinct teeth. The lid or operculum is ovate to oblong in shape, lacks appendages, and has an acute apex. An unbranched spur (≤20 mm long) is inserted near the base of the lid. Upper pitchers are similar to their lower counterparts but differ in being throughout. The wings are often retained in aerial pitchers, although they may be reduced to ribs.