MOHAMMED HAMZA (2013) – CC BY-SA 3.0 DEED – https://commons.wikimedia.org/wiki/File:A1-2-Pyrus_calleryana_%28Callery_Pear%29.JPG
Krzysztof Ziarnek, Kenraiz (2017) – CC BY-SA 4.0 DEED – https://commons.wikimedia.org/wiki/File:Acer_obtusifolium_kz02.jpg