[1] The specific name, helleri, is in honor of American zoologist Edmund Heller.

[1] R. helleri is found in Bangladesh, Bhutan, China (Fujian, Guangdong, Guangxi, Guizhou, Hong Kong, Sichuan, Yunnan), India (Arunachal Pradesh, Assam, Mizoram, Sikkim, Tripura), Myanmar, Nepal, and northern Vietnam.

[1] Type locality: Tengyueh, 5500 feet elevation, Province of Yunnan, China, 25°01'N, 98°30'E.

[1] A medium-sized snake, R. helleri may attain a total length (including tail) of 1.3 m (4.3 ft).

[1] The venom of R. helleri can cause severe coagulopathy, but no human fatalities have been reported.