Shrub or treelet to 3(-5) m tall, almost glabrous. Petiole 2.5-4.5(-7.5) cm long, vaginate and narrowly winged to apex; blade sometimes discolorous and pale brown beneath, not scabrous, not conspicuously glandular-dotted, elliptic-oblong or somewhat ovate, 20-24(-36) x 7.5-9.5(-17) cm, apex acute to short-acuminate, lower half of blade asymmetrical, base unequally attached to petiole difference 0-0.5 cm: shorter side obtuse to abruptly acute, longer side abruptly rounded, obtuse or cordate, glabrous, except minutely pubescent veins below; pinnately veined, secondary veins 5-6(-8) per side, widely spaced, originating from lower 2/3 or more of primary vein, anastomosing well within margin, prominent below, tertiary veins very widely reticulate, minutely pubescent below. Inflorescence pendent; peduncle slender, 1.5-2.5 cm long, glabrous; spike 1.5-5 cm long, to 0.5 cm wide, not apiculate; rachis glabrous; floral bracts densely marginally fringed. Infructescence to 9 cm long; fruits obovoid or slightly flattened, ca. 2 mm wide, somewhat separate, glabrous or minutely papillate, stigmas 3-4, lanceolate, sessile.