Laburnum in "L. anagyroides" and long in "L. alpinum". They have yellow pea-flowers in pendulous leafless racemes long in spring, which makes them very popular garden trees. In "L. anagyroides", the racemes are long, with densely packed flowers; in "L. alpinum" the racemes are long, but with the flowers sparsely along the raceme. The fruit develops as a pod and is extremely poisonous. The yellow flowers are responsible for the old poetic name 'golden chain tree' (also spelled golden chaintree or goldenchain tree). All parts of the plant are poisonous, although mortality is very rare. Symptoms of laburnum poisoning may include
Mandragora (genus) contain highly biologically active alkaloids that make the plants poisonous. Their roots in particular have a long use in traditional medicine. Mandrakes are involved in many myths and superstitions. Species of "Mandragora" are perennial herbaceous plants. They have large vertical tap-roots, sometimes forked. Their stems are short or virtually absent. The leaves form a rosette at the base of the plant. The flowers are sometimes borne on a short stalk (scape), and are solitary, with whorls of five parts. The sepals are joined at the base, as are the petals, both in the shape of a lobed bell. The stamens