Laburnum x wateri is a small, spreading, deciduous tree grown for its lovely yellow flowers in spring.
It has long, grey/green, downy-undersided leaves and downy new shoots.
In Spring it bears dense, drooping racemes of bright buttery yellow pea-like flowers in spring, which make a magnificent sight.
The Laburnum is, however, poisonous, particularly the seeds, so you should use gloves to handle them.
In larger gardens the Laburnum makes a great, covered, trellis-style archway where (like Wisterias) their vibrant flowers hang down to make a stunning walkway.