| 蓼蓝 | liǎo lán | indigo dye; Polygonum tinctorium |
| 1 | A new species of Polygonum from Yunnan. | |
| 2 | A new species of Polygonum from Yunnan. | |
| 3 | Larvae host plants Polygonum viviparum underground stem. | |
| 4 | The development of the embryo sac is Polygonum type with numberous antipodal cells. | |
| 5 | Function megaspore is in the chalaza and the monosporic embryo sac is chenopodiad type. |