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