Table 1 Tested samples of A. lancea and A. chinensis
| Producing area | Codes | Producing area | Codes |
|---|---|---|---|
| A. lancea (Thunb.) DC., family Compositae | A. chinensis (DC.) Koidz., family Compositae | ||
| Jiangsu | A1 | Hebei | B1 |
| Jiangsu | A2 | Hebei | B2 |
| Jiangsu | A3 | Hebei | B3 |
| Jiangsu | A4 | Hebei | B4 |
| Jiangsu | A5 | Inner Mongolia | B5 |
| Anhui | A6 | Inner Mongolia | B6 |
| Anhui | A7 | Inner Mongolia | B7 |
| Hubei | A8 | Liaoning | B8 |
| Hubei | A9 | Liaoning | B9 |
| Henan | A10 | Beijing | B10 |
| Yunnan | A11 | ||