Erect shrub, up to 1.5 m high, sparingly-branched. Leaves 3-nate, 10-14 mm long, linear-acuminate, erect, spreading, sulcate, close-ranked, shortly ciliate. Flowers 1-or 2-nate, terminal, calycine, in long, dense pseudo-racemes, subsessile. Calyx sepals prominent, 14-16 mm long in opposite pairs, outer lanceolate, inner more oblong, concave, scarious, green. Corolla concealed by sepals, 2.6-3.0 mm long, subovoid to narrowly urceolate, 4-fid, glabrous, dry, green to white; lobes erect, ovate, obtuse, ± equal to tube. Stamens 10-12 mm long, exserted from corolla but shorter than sepals; anthers 1.5 mm long, terminal, semi-lanceolate, acute, submembranous; theca deeply partite, muticous; pore nearly equal to theca. Ovary oblong, glabrous, with broadly margined seeds; style manifest; stigma capitate. Flowering time May-Aug.
Erect shrub to 1.5 m. Flowers large, very calycine, green and white, corolla very reduced around ovary.