Plant moderately robust, erect, 10-25 cm tall. Stem internodes terete, longitudinally ridged, 5-20 mm long, 1-3 mm wide, enlarged at the nodes. Leaves rudimentary, each opposite pair forming a spreading collar c. 0.5 mm wide. Inflorescence axillary, a sessile cymule of 1-3 flowers subtended by a cupule c. 0.5 mm long, with many subsidiary cymules of 1-3 flowers soon developing adjacent to the first one, with the middle flower female and the lateral flowers (when present) male or female. Fruit urceolate, sessile, coarsely wrinkled when dry, crowned by the persistent tepals. Fig. 9c.