The samaras are small, and often numerous. They are small deciduous trees, typically 5–15 m tall, rarely to 20 m tall, fast-growing when young but soon slowing down with age, and often short-lived; they typically occur as understorey trees in mountain forests, often along streamsides.
Samaras are small and numerous. They are small deciduous trees that grow between 5 and 15 meters tall, occasionally reaching up to 20 meters. These trees grow quickly when young but slow down with age, often living for a short time; they commonly occur as understory trees in mountain forests near streams.