Catunaregam nilotica (Stapf) Tirveng.

Single or multi-stemmed shrub or small tree (1–)2–6 m. tall, little or much-branched, the branches often arching, nearly touching the ground; solitary alternate spines present, 1–3.5 cm. long, often dark at the tips and also short or cushion-like opposite spur-shoots; sometimes these spur-shoots are branched representing a much reduced lateral branched system; branchlets white or grey, glabrescent to sparsely or densely hairy at the tips; bark rough and wrinkled.. Leaves clustered on the short shoots, obovate-spathulate to oblanceolate, 0.7–7 cm. long, 0.4–3 cm. wide, rounded at the apex, narrowed to the base into a petiole 1–10 mm. long, glabrous, glabrescent or densely pubescent; stipules rounded-ovate or triangular, 1–1.5 mm. long, soon falling.. Flowers 1–2 at the ends of the short shoots, the peduncle obsolete; sometimes on spur-shoots which themselves bear very short branches, the flowers can appear terminal and axillary; pedicels 0.3–1.6 cm. long, glabrous.. Calyx-tube cup-shaped, 1.5–2 mm. long, glabrous or puberulous; limb-tube cylindric-cup-shaped, longer and broader than the calyx-tube, 2.2–4 mm. long with well spaced mostly oblong or spathulate lobes 1–3.5 mm. long, glabrous or pubescent.. Corolla sweet-scented, white or cream, turning yellow, adpressed silky or pubescent outside; tube short, 4–5 mm. long, glabrous at the base; lobes obovate-oblong to oblong-spathulate or round, 5–10 mm. long, 3.5–5 mm. wide.. Stigma clavate, 2 mm. long, exserted.. Fruit yellow-brown, ellipsoid to subglobose, 1.3–2.5 cm. long, 1–1.8 cm. wide, crowned with the calyx-limb, wrinkled and rugose, glabrous or slightly pubescent near the calyx.. Seeds brown, compressed-ellipsoid, 4.5–5 mm. long, 3.5 mm. wide, 2 mm. thick, faintly rugulose.

It is a tropical plant. It grows in dry woodland savannah.

Plants are grown from seeds.