Betula alnoides

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)). It is the southernmost of all known species of the genus Birch, whose natural range reaches approximately 12° N in Cardamom Mountains, Cambodia.