are often reduced to ridges, although no vestige of the wings may be apparent in some specimens. These ridges typically run parallel in the lower part of the pitcher, becoming divergent above. The pitcher mouth is horizontal and straight. The peristome is flattened, glossy and up to 1.5 cm wide, being of approximately equal width across its span or broader towards the rear. The peristome ribs are highly reduced but conspicuous, being only up to 0.5 mm high and spaced up to 0.5 mm apart. The rear of the pitcher is elongated into an acuminate neck (≤3 cm long) that may be vertical or inclined forwards at a considerable angle relative to the pitcher orifice. The peristome's inner margin lacks teeth, while the outer margin is often sinuate at the base of the neck. The lid is typically hastate and very narrow, measuring up to 8 cm in length, with basal and middle widths of up to 2.5 and 1 cm, respectively. It bears rounded basal lobes and an obtuse to abruptly rounded apex. It is often curled upwards and may be crenellated at the margins. The presence of appendages is variable in upper pitchers: the lid may possess a pair of appendages as in terrestrial pitchers or may lack them completely. Where these appendages are present, the basal one is hook-shaped and up to 8 mm long and the apical one filiform and up to 12 mm long. The glands of the lower lid surface are similar to those found in lower pitchers. The spur is inserted 10 mm below the lid. It may be simple or bifid at its apex, and measures up to 10 mm in length. Developing pitchers have laterally appressed walls and a pronounced bulge at the rear, which holds the spur upright. The spur has a closed bifurcation at this point. Nepenthes eymae has a racemose inflorescence. The male inflorescence measures up to 30 cm in length by 2.5 cm in width (flowers included), of which the peduncle (≤3 mm wide at its base) constitutes up to 11 cm and the rachis up to 20 cm. Flowers are borne singly or in pairs, the two-flowered partial peduncles being located towards the base of the inflorescence. The partial peduncles are ebracteate and number 30–40. They are approximately 4 mm long, being formed from a pair of basally-united pedicels around 10 mm long. Tepals are elliptic