The four aromatics · Named sets in daily use
| System | Named sets in daily use |
| Source | Sharangadhara Samhita, Bhavaprakasha Nighantu and the later nighantus |
| Dravya | 4 |
| Name | Identity |
|---|---|
| Twak | Twak Cinnamomum verum J.Presl |
| Ela | Ela Elettaria cardamomum (L.) Maton |
| Patra | Tejpatra Cinnamomum tamala (Buch.-Ham.) T.Nees & C.H.Eberm. |
| Nagakeshara | Nagakeshara Mesua ferrea L. |