Table 3.
Distribution and saponin content of rhizome group of Chinese Dioscorea.
| Species | Distribution | Saponin content/% |
|---|---|---|
| Dioscorea althaeoides | Yunnan, Sichuan | 0.5−2.3 |
| D. colletti | Southwest, Shaanxi | 0.5−1.0 |
| D. colletti var. hypoglauca | Fujian, Zhejiang, Jiangxi, Hunan, Guangdong, Taiwan, Sichuan | 0.53−2.02 |
| D. deltoidea | Yunnan, Sichuan, Tibet | 1.8−5.4 |
| D. gracillima | Anhui, Zhejiang, Jiangxi, Fujian | 1.03−2.39 |
| D. nipponica | Northeast, North China, Northwest, East China, Henan | 1.36−2.00 |
| D. panthaica | Southwest, Hunan | 1.70−4.20 |
| D. tokora | East China, Central south, Sichuan, Guizhou | 1.00−2.10 |
| D. zingiberensis | Shaanxi, Gansu, Sichuan, Yunnan, Hubei, Hunan, Henan | 1.05−16.15 |
| D. tenuipes | Zhejiang, Fujian,Jiangxi, Anhui | 1.28 |