Leitneria floridana, commonly known as Corkwood, is a unique and historically significant plant native to the southeastern United States. It holds a special place in botanical studies due to its unusual characteristics and limited distribution. This deciduous shrub or small tree is the sole species within its genus, Leitneria, and family, Leitneriaceae, making it a monotypic taxon of considerable scientific interest. Corkwood typically grows as a multi-stemmed shrub, though it can occasionally develop into a small tree reaching heights of up to 10 meters (approximately 33 feet). Its most striking feature is its extremely lightweight and buoyant wood, which gave rise to its common name. The bark is smooth and grayish on young stems, becoming fissured with age. The leaves are alternate, simple, and obovate to oblong, measuring about 10-20 cm in length, with finely toothed margins. They are typically a glossy green on the upper surface and paler beneath, turning yellow in the fall. The flowers of Leitneria floridana are dioecious, meaning individual plants bear either male or female flowers. They are inconspicuous and appear in early spring before the leaves emerge. Male flowers are borne in slender, drooping catkins, while female flowers are solitary or in small clusters. The fruit is a small, ovoid drupe, about 1 cm long, which ripens in late summer or early fall. The native range of Leitneria floridana is restricted to specific wetland habitats in Florida, Georgia, Alabama, and Mississippi. It thrives in poorly drained soils, often found in swamps, bayheads, and along the edges of streams and ponds. While its natural distribution is limited, it can be cultivated in similar moist, acidic conditions in suitable climates. Historically, the exceptionally light wood of Corkwood was utilized for various purposes, including floats for fishing nets and as a substitute for cork. Its buoyancy and resistance to waterlogging made it particularly valuable. Ecologically, it plays a role in its native wetland ecosystems, providing habitat and food for some wildlife. Despite its interesting properties, Leitneria floridana is not widely cultivated ornamentally, likely due to its specific habitat requirements and the availability of more common landscape plants. Its primary significance remains its unique botanical status and its historical connection to the natural resources of the southeastern United States.