Acronychia oblongifolia, commonly known as common acronychia, is a species of flowering plant in the citrus family, Rutaceae. This evergreen shrub or small tree is a native inhabitant of eastern Australia, where it plays a role in its local ecosystems. Its significance lies in its contribution to biodiversity and its potential as an ornamental plant in suitable climates. The growth habit of Acronychia oblongifolia is typically that of a dense shrub or a small tree, reaching heights of up to 10 meters, though it often remains smaller in cultivation. The plant features opposite, pinnately compound leaves, which are a distinctive characteristic. Each leaf is composed of three to seven leaflets, which are ovate to elliptic in shape and have a glossy, dark green upper surface. The margins of the leaflets are entire, and they often have a slightly leathery texture. The bark of Acronychia oblongifolia is generally smooth and greyish. During the spring and summer months, the plant produces clusters of fragrant, star-shaped flowers. These flowers are typically white or cream-colored and possess four petals. The fragrance of the flowers is often described as sweet and citrus-like, a common trait among members of the Rutaceae family. Following successful pollination, the flowers develop into small, fleshy fruits. These fruits are drupes, globose in shape, and turn from green to a pale yellow or cream color when mature. They typically contain one to four seeds. Acronychia oblongifolia is naturally distributed along the coastal regions of eastern Australia, extending from Queensland down to New South Wales. It thrives in a variety of habitats, commonly found in rainforest margins, open forests, and along creek banks. It prefers well-drained soils and can tolerate a range of light conditions, from full sun to partial shade. In cultivation, it is best suited to temperate and subtropical climates. While it is relatively hardy once established, it benefits from protection from prolonged frost. Its attractive foliage, fragrant flowers, and ornamental fruits make it a desirable plant for gardens, particularly in its native regions or areas with similar climatic conditions. While not widely cultivated for specific economic purposes, Acronychia oblongifolia contributes to the ecological health of its native environment by providing habitat and food sources for local fauna. The fruits are consumed by birds, aiding in seed dispersal. There is limited documented evidence of significant medicinal, culinary, or agricultural uses for this particular species. However, like many plants in the Rutaceae family, it contains essential oils, which contribute to its fragrance. An interesting characteristic of Acronychia oblongifolia is the strong, often pungent, aroma released from its leaves and flowers, especially when crushed or in warm weather. This scent is a result of volatile oils produced by the plant, a common defense mechanism and attractant for pollinators in the plant kingdom. The glossy, leathery leaves are an adaptation that helps reduce water loss, particularly in its often humid, yet sometimes dry, coastal environments.