Betula fruticosa, commonly known as dwarf bog birch,[1] (traditional Chinese: 柴樺; simplified Chinese: 柴桦; pinyin: chái huà) is a species of dwarf birch that grows in central and eastern Europe (except for Finland where it grows rare) and Siberia and Mongolia[2] on elevation of 600–1,100 metres (2,000–3,600 ft) in forests, streambanks, and swamps.

[3] The species is 3 metres (9.8 ft) tall and have glabrous branches that are either purplish-brown or grayish-black in colour.

Petiole is 2–10 millimetres (0.079–0.394 in) long and is a hairless as the branches.

Female species have an oblong inflorescence which is erect as well.

The bracts are ciliate, 4–7 millimetres (0.16–0.28 in) long, and have elliptic nutlets.