Red Haired Girl In The Nature Posing On The Glade Field With Birch Trees

Betula szechuanica (Betula pendula var. szechuanica)—Sichuan birch
Betula tianshanica
Betula utilis—Himalayan birch
Note: many American texts have B. pendula and B. pubescens confused, though they are distinct species with different chromosome numbers.