Unique, first in Russia FIELD mobile guide to trees, shrubs and lianas of Northern Eurasia: 92 most prevalent species, each with detailed scanned macro image of shoot, leaf, flower and/or inflorescence, fruit/cone, typical identification features and text description. It is easy and fun to identify species using 16 determination morphological characters with 3-8 values in each of them. This app is only available in Russian! Application consists from 6 main parts: Guide, Atlas, Textbook, Manual, Systematic Tree (with class, family and genus descriptions) and Quiz. The application works without Internet connection, you can use it directly in nature if you see or have the unknown object in your hands. Using the Guide you can narrow the number of possible species to 2-3 and then compare your object with their images and descriptions in the Atlas. Our mobile applications in English: https://ecosystema.ru/eng/apps/index.htm Ecosystem on Facebook: https://www.facebook.com/Ecosystema1994/