Plant slender, erect. Stem internodes terete, slightly flattened upwards, striate, 25-60 mm long, 2-3 mm diameter below, widened to 2.5-4 mm above. Leaves mostly normally developed; lamina lanceolate to ovate, often falcate, attenuate at the base to an obscure petiole 5-10 mm long, obtuse to acute and sometimes mucronate at the apex, 3-or 5-nerved, 60-100 by 13-45 mm. Inflorescence axillary, a pedunculate cymule of 3 flowers subtended by a cupule 1-2 mm long, with subsidiary cymules developing adjacent to the first, with the middle flower male or female and the lateral flowers female; peduncle 4-6 mm long, elongating slightly in fruit. Fruit ellipsoid, shortly stipitate, finely punctate.
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