Zanthoxylum armatum, also called winged prickly ash or rattan pepper in English, is a species of plant in the family Rutaceae.

It is an aromatic, deciduous, spiny shrub growing to 3.5 metres (11 ft) in height, endemic from Pakistan across to Southeast Asia and up to Korea and Japan.

The rachis of the leaves is pubescent glabrous or rust-colored and has wings to 6 mm on each side, hence it common English name, this is one of the anatomical features distinguishing it from other Zanthoxylum species.

[1][4] Regions where it occurs are: Japan; Nansei-shoto/Ryukyu Islands; Korea; North-Central, South-Central & Southeast China, specifically Anhui, Fujian, South Gansu, Guangdong, Guangxi, Guizhou, South Henan, Hubei, Hunan, Jiangsu, Jiangxi, Shaanxi, Shandong, South Shanxi, Sichuan, Xizang, Yunnan, and Zhejiang; northern Taiwan; Philippines; Vietnam; Laos; Thailand; Myanmar; Bangladesh; India, including Assam; Bhutan; Nepal; Tibet; the Eastern and Western Himalayas; Kashmir; and Pakistan, and possibly Indonesia.

The variety ferrugineum occurs in North-Central, South-Central & Southeast China, specifically in Guangdong, Guangxi, Guizhou, Hunan, Shaanxi, Sichuan and Yunnan.

Other names include: Qanadlı zantoksilum (Azerbaijani); Dambara in Pashto,[citation needed] तेजफल tejphal, darmar, tumru, timroo, trimal (Hindi);[7] ꯃꯨꯛꯊ꯭ꯔꯨꯕꯤ মুক্থ্ৰূবী mukthrubi (Manipuri) ; तिमुर timur (Tamil) ; konda-kasimi (Telugu) ; ಜಿಮ್ಮೀ jimmi (Kannada) ; തൂമ്പണലരി (Malayalam);[citation needed] hokum (Adi);[7] ganya (Angami) ; winged prickly ash,[10][7] prickly ash,[7] toothache tree, yellow wood, suterberry (English) ; tumbru, tejbal (other names in India); arhrikreh (Mizo); टिमुर timur (Nepali);[7][5] หมักก้าก h̄mạk k̂āk,[citation needed] hui-jiao (Thai);[11] Sẻn gai (Vietnamese);[citation needed] 竹叶花椒 zhúyè huājiāo (Standard Chinese);[12] flügelstachelige Stachelesche (German);[12] and Mongmong (Ao Naga).