One of the most bizarre plants in our flora is Purple toothworth or Lathraea clandestina. The Northern border of its natural distribution area lies in Northern Belgium, and in the Netherlands it is considered not autochtonous. However, it can be found in parks and botanical gardens in the Southern and Central part of the country. Probably it escaped from the botanical garden in Delft.
Lathraea clandestina is a parasitic plant, and it is dependent for it nutrition on trees. In the botanical garden in Wageningen it grows on the roots of Acer saccharinum. Above ground only the large purple flowers are visible.