Diplotaxis tenuifolia (L.) DC. (Brassicaceae) is a member of new genus for Siberia
The article provides information about the first record of alien plant species, Diplotaxis tenuifolia (L.) DC., in the territory of Asian Russia. This species of Mediterranean origin, widely used as a salad plant, has now spread almost cosmopolitanly. In Siberia and Asian Russia as a whole, this species was first found on the territory of Tomsk in August 2017. The species was collected on the right bank of the river Tom near the street Melnichnaya, along the footpath near the brick fence of the house, and also in southwest slope to the river. There were at least 200 generative individuals of this species in the investigated population covered an area of about 1,500 square meters. Reexamination of this location in 2018 showed that Diplotaxis tenuifolia is able to successfully overwinter, giving full-fledged viable seeds at the end of the growing season. Appearance of this species in revealed location was most likely due to its escaping from culture.