The West Indian Lime tree (Citrus aurantiifolia) is a small, evergreen citrus tree commonly grown in Perth's warm climate. Known for its fragrant flowers and small, tangy fruit, it thrives in sunny, well-drained areas. The tree typically reaches 4 to 5 meters in height, producing round, greenish-yellow limes with a zesty flavor, popular in cooking and drinks. With its lush foliage and drought tolerance, it's a popular choice in Perth gardens, providing both ornamental beauty and edible fruit.