Laburnum is not a medical term, but a botanical name for a genus of flowering plants in the family Fabaceae. The two most common species are Laburnum anagyroides, known as the Common Laburnum or European Laburnum, and Laburnum alpinum, known as the Scottish Laburnum or Alpine Laburnum.

These trees have large clusters of bright yellow pea-like flowers that bloom in late spring to early summer. While they are often cultivated for their attractive appearance, all parts of the laburnum plant contain toxic alkaloids and can be harmful if ingested. The seeds or beans of the laburnum tree are particularly poisonous and may cause serious health issues such as nausea, vomiting, convulsions, and even death in severe cases.

Therefore, while not a medical term itself, it is important for healthcare professionals to be aware of the potential toxicity of laburnum plants when assessing patients with possible plant poisoning.