| Plant |
|---|
| Walsura trifoliata |
| Wedelia biflora ( Bunga butang (Button flower) , Saruni , Serunai , Seremai , Serunai laut , Serenah laut , Sunai laut ) |
| Xylopia aethiopica ( Negro Pepper ) |
| Xylopia villosa |
| Zanthoxylum bungei ( Ta Chiao , Hua Chiao , Ch'In Chiao ) |