KALYUZHNY, SERGEY S., The Nikitsky Botanical Gardens - National Scientific Center of the Russian Academy of Sciences, Republic of the Crimea, Yalta, Nikita settlement, 298648 Russia. Botanical Garden of Irkutsk State University, Irkutsk oblast, Irkutsk, Koltsov St., PO Box 48, 664039 Russia. Joint Russian-Vietnamese Tropical Scientific and Technological Center, Cau Giay, Hanoi, Vietnam., Russian Federation