Perennial, 40-70 cm tall. Leaves ovate-lanceolate, elliptic or lanceolate, acute to acuminate, base cordate-amplexicaul, 6-60 mm long, 2.5-15 mm broad. Spikes 9-45 cm long. Pedicels 1-2 mm. Hypanthium 12-ribbed. Epicalyx longer than or equalling the calyx. Petals 5.5-8.5 mm long, 2-3 mm broad, obovate-spathulate or obovate-oblanceolate. Ovary subsessile, 2-5 mm long, 0.75-1.5 mm broad. Capsule 4 mm long, 1.5 mm broad, narrowed. Seeds obovate, tip ±membranous.
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