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