A much branched shrub, 6 feet high or more. Branches terete, ashy-white, spinous; spines supra-axillary, opposite, subulate, 1 in. long, patent. Leaves ovate, subacuminate, very shortly petiolate, except the midrib inconspicuously veined; 2–3 in. long; stipules acuminate. Peduncles solitary, opposite, divided into two quite simple racemes scarcely as long as the leaves; flowers pedicellate, distichous, alternate, one pedicellate flower in the fork of the peduncle; bracteoles 2, small, at the base of the bifurcation. Calyx turbinate, acutely 5-toothed. Corolla campanulate, 1/4– 3/8 in. (size of Convallaria majalis, L.) long, greenish white, 5-cleft; lobes acute, revolute. Stigma capitate-conical, bifid at the tip, on a level with the anthers.
