[2] Betula alnoides (Chinese: 西桦; pinyin: xi hua; Thai: กำลังเสือโคร่ง, RTGS: kamlang suea khrong, literally: "tiger power") is a species of birch that is native to countries including Bangladesh, Bhutan, Cambodia, China, India, Laos, Myanmar, Nepal, Thailand and Vietnam, at elevations of 300–2,100 m (1,000–7,000 ft) and higher in some cases (up to 2,700 m (9,000 ft)).

[3][4][5][6][7] It is the southernmost of all known species of the genus Birch, whose natural range reaches approximately 12° N in Cardamom Mountains, Cambodia.

The female inflorescences is a pendulous and cylindric raceme, that, by time it matures, reaches a diameter of 5–10 centimetres (2.0–3.9 in) by 4–6 millimetres (0.16–0.24 in).

The seeds are ripe from March to May and are 1.5–2 millimetres (0.059–0.079 in) long while the flowers bloom from October to January.

Betula alnoides inner bark is edible and is used for making cakes and bread.