Shrubs ca. 2.5 m tall. Branches grayish brown; branchlets green, with spines or rarely unarmed; spines ca. 4 cm, apex red. Leaves simple; petiole 1-7 mm; leaf blade ovate, obovate, elliptic, or suborbicular, 2-6(-10) × 1-5 cm, leathery, with oil glands and an orange smell, midvein slightly ridged, secondary veins joined in an arched marginal vein, apex rounded to obtuse and retuse to emarginate at tip. Inflorescences axillary, fasciculate, (1-or) several flowered. Flowers 5-merous, subsessile. Calyx persistent. Petals white, 3-4 mm, with oil glands. Stamens 10; filaments white, distinct or sometimes a few basally connate. Style green, ± as long as ovary. Fruit bluish black when ripe, globose, slightly oblate, or subellipsoid, 0.8-1.2 cm in diam., smooth, 1-or 2-seeded. Seeds with 1(or 2) embryos; cotyledons green, with many oil glands. Fl. May-Dec, fr. Sep-Dec. 2n = 36.
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A small spiny tree. It grows 6 m tall. The leaves are alternate and reduced to a single oblong leaflet 2.5 cm long. It is dark green. The flowers are very small and pure white. They are in clusters or 2-3 in the axils of the leaves. They have a scent. The fruit are round, black and about 1 cm long. They have several oval seeds.
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