Melicope ternata, commonly known as wharangi, is a species of flowering plant in the citrus family, Rutaceae, endemic to New Zealand. This evergreen shrub or small tree is a distinctive component of New Zealand's native flora, often found in coastal and lowland forest environments. Its significance lies in its role within these ecosystems and its historical uses. Wharangi typically grows to a height of 2 to 6 meters, though it can occasionally reach up to 10 meters. The plant is characterized by its trifoliate leaves, meaning each leaf is divided into three leaflets. These leaflets are ovate to elliptic in shape, measuring about 5 to 10 cm in length, with a glossy, dark green upper surface and a paler, often slightly hairy, underside. The margins of the leaflets are usually entire or finely toothed. The bark of Melicope ternata is smooth and greyish. During its flowering season, which typically occurs from late spring to summer, the plant produces clusters of small, fragrant flowers. These flowers are usually white or pale pink and have four petals. Following pollination, the plant develops small, woody capsules that split open to release seeds. The native distribution of Melicope ternata is primarily across the North Island of New Zealand, extending to some offshore islands. It thrives in a variety of habitats, including coastal scrub, open woodlands, and forest margins, often preferring well-drained soils and a position that receives adequate sunlight. While it is adapted to temperate climates, it can be cultivated in similar conditions in other regions, provided it is protected from severe frost. Historically, Melicope ternata has held some importance for Māori, who utilized various parts of the plant for medicinal purposes. The leaves were sometimes used in poultices or infusions to treat ailments. While not a major economic plant, its attractive foliage and flowers make it a subject of interest for native plant enthusiasts and in ecological restoration projects. An interesting characteristic of Melicope ternata is its aromatic foliage, which releases a pleasant scent when crushed, a common trait among many species in the Rutaceae family. This fragrance is due to the presence of essential oils within the leaves. The plant's ability to colonize coastal areas and its role as a food source for native insects and birds contribute to its ecological value in its native environment.