Betula chinensis

Betula chinensis, commonly known as dwarf small-leaf birch, is a species of birch that can be found in China and Korea on the elevation of 700 - 3000 m.

Description
The species is 5 m tall with either yellow or yellowish-brown colour. Leaf blade is elliptic and ovate with a diameter of 1.5 - 6 cm by 1 - 5 cm. Female species have a subglobose inflorescence which is also oblong with a diameter of 1 - 2 cm by 0.6 - 1.5 cm. It peduncle is 1 - 2 mm long while its bracts can be as long as 5 - 9 mm. Flowers bloom from May to June while the fruits ripe from July to August.

Taxonomy
Betula chinensis occurs in both hexaploid and octoploid forms. It appears to be a triple hybrid between B. calcicola, B. potaninii and B. chichibuensis. It is placed in section Asperae, subgenus Aspera.