As for N. edwardsiana, but leaf blade larger, to 35(-60) by 12(-20) cm. Upper pitchers semi-woody, shortly cylindrical, slightly constricted at the midpoint, 22-28 cm long, 6.5-8.5 cm wide at base and apex, 6-7 cm wide at midpoint; peristome ribs shallower, 1(-3) mm high, 5-8 mm apart; lid larger, 9-12 by 9-10.5 cm. Inflorescence 38-78 cm long; peduncle 15-23 cm long, 0.4 cm diam. at the base; partial peduncles 1-flowered, pedicels ± 250, 15-16 mm long; bracts 1-2 mm long, 1-5 mm from main axis; tepals elliptic, 5-6 by 3 mm; androphore 3-4 mm long; anther head 1.5-2 by 2-2.5 mm. Colour of pitcher suffused dull red, peristome glossy dark red, inner pitcher surface pale green, lid red above, green below, inflorescence dull reddish brown and green.
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