Laburnum anagyroides during May and June. "Laburnum anagyroides" blooms in late spring with pea-like, yellow flowers densely packed in pendulous racemes 10–25 cm (4–10 in) long. The flowers are golden yellow, sweet scented, and typically bloom in May. The seeds are legumes with large numbers of black seeds that contain cytisine, an alkaloid extremely poisonous to humans as well as goats and horses, especially when not ripe. However, some wild animals such as hares and deer can feed on them without any problems, and because of this the plant is believed to have magic properties in some regions. All parts of the
Laburnum intense sleepiness, vomiting, convulsive movements, coma, slight frothing at the mouth and unequally dilated pupils. In some cases, diarrhea is very severe, and at times the convulsions are markedly tetanic. The main toxin in the plant is cytisine, a nicotinic receptor agonist. It is used as a food plant by the larvae of some Lepidoptera species, including the buff-tip. "Laburnum" comprises the following species: The status of the following species is unresolved: The following hybrids have been described: There is also a graft hybrid, +"Laburnocytisus adamii" . "Laburnum" has historically been used for cabinetmaking and inlay, as well as for