Plants shrubs or trees up to 7-8 m tall and smooth greyish bark; young twigs glabrous or puberulous. Leaves alternate on twigs of the current year, clustered on older branches; blades 2-4.5 cm long, 0.7-2 cm wide, elliptic, oblanceolate, or obovate, rigid, pale green, glabrous on both surfaces, midrib and lateral veins prominent on upper surface, base cuneate, tip rounded or subacute, mucronulate. Racemes terminal or axillary, dense, corymbose; rachis 3-6 cm long, glabrous or puberulous; bracts 4-5 mm long, ciliate pubescent; pedicels 6-8 mm long, thickened in fruit, puberulous. Sepals ovate-ellipti4-5 mm long., 1.5-2 mm wide, puberulous; receptacle disk fimbriate; stamens (5-)8(-9); filaments 2-4 mm long, anthers about 1 mm long; gynophore about 1-2 mm long, glabrous; ovary 1-1.7 mm long ovoid, stigmatic region flattened-capitate, subsessile. Fruits globose, up to 12 mm in diameter, reddish-grey, sometimes papillose.
Boscia angustifolia grows in deciduous bushland and on rocky and stony soils at elevations up to 1000 m. The Flora of Somalia states that it is known from regions N1 of Somaliland and S1 of Somalia as well as from Senegal through the Horn of Africa to Arabia and south to Tanzania.