Trimeresurus stejnegeri

The specific name, stejnegeri, is in honor of Leonhard Stejneger, the Norwegian-born, American herpetologist who worked at the Smithsonian Institution for over 60 years. ==Description==

Trimeresurus stejnegeri grows to a maximum total length of , which includes a tail length of . The males have hemipenes that are short and spinose beyond the bifurcation. The dorsal scales are arranged in 21 longitudinal rows at midbody. There are 9–11 upper labials, of which the first are separated from nasal scales by a distinct suture. The supraoculars are single, narrow, and sometimes divided by a transverse suture. There are 11–16 scales in a line between the supraoculars. The ventrals number 150–174, and the subcaudals are 54–77. All of the subcaudals are paired. ==Common names==

Common names for T. stejnegeri include bamboo viper, Chinese tree viper, ==Geographic range==

Trimeresurus stejnegeri is found in India (Western Ghats & Eastern Ghats, Northeast India) and Nepal through Myanmar and Laos to much of southern China (Yunnan, Sichuan, Gansu, Jiangxi, Jiangsu, Hunan, Hubei, Guizhou, Guangxi, Guangdong, Hainan, Fujian, Anhui, Zhejiang), Vietnam, and Taiwan. The type locality was originally listed as "Shaowu, Fukien Province, China", and later amended to "N.W. Fukien Province" by Pope & Pope (1933) (Fukien being the former romanization of Fujian). this snake is often confused with Trimeresurus, Ahaetulla oxyrhyncha in India. ==Habitat==

The preferred natural habitat of T. stejnegeri is forest, at altitudes from sea level to . ==Venom==

Trimeresurus stejnegeri has a potent hemotoxin. The wound usually feels extremely painful, as if it had been branded with a hot iron, and the pain does not subside until about 24 hours after being bitten. Within a few minutes of being bitten, the surrounding flesh dies and turns black, highlighting the puncture wounds. The wound site quickly swells, and the skin and muscle become black due to necrosis. The size of the necrotic area depends on the amount of venom injected and the depth of the bite. ==Reproduction==

T. stejnegeri is viviparous. ==Subspecies==