Shrub to 1.5 m tall, glabrous. Leaves elliptic, to 32 cm long and 15 cm wide, apically acuminate, basally attenuate, membranous, the cystoliths dense and prominent on both the surfaces, glabrous, the margins entire. Inflorescences in terminal, narrow panicles, the peduncles to ca. 15 cm long, the bracts and the bracteoles ovate lanceolate, 8-12 mm long. Flowers with pedicels 1.5-3 cm long; sepals 3, elliptic 2-4 cm long, 2 cm wide, acute, containing numerous cystoliths, the venation conspicuous; corolla pale green or yellow; stamens 2.
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