Pinus sylvestris krylovii (Serg. et Kondr.) Busik (= Pinus krylovii Serg. et Knodr.). A pine-tree subspecies resistent to a very arid climate of Dahurian Steppes. It grows locally on the banks of the Onon River middle flow, where forms a large forest being offensive on the steppe, used for forestation of steppes in Transbaikalia and China.

Right bank of the Onon River 12 km upstream of the village Nizhnii Tsasuchei, Onon district, Chita Region, S Transbaikalia (Dahuria), Siberia, Russia. 15th July 1996. O. Kosterin.