I think this is Cichorium intybus, is a somewhat woody, perennial herbaceous plant of the dandelion family Asteraceae, usually with bright blue flowers, rarely white or pink. Many varieties are cultivated for salad leaves, chicons (blanched buds), or roots (var. sativum), which are baked, ground, and used as a coffee substitute and additive. It is also grown as a forage crop for livestock. It lives as a wild plant on roadsides in its native Europe, and is now common in North America, China, and Australia, where it has become widely naturalized. "Chicory" is also the common name in the United States for curly endive (Cichorium endivia); these two closely related species are often confused.

Non, ce n'est pas Cichorium intybus. Il est probable que ça soit une espèce appartenant à la famille des polygonacée, si on observe bien l'épi, c'est à dire le fruit!

It is found in our south Indian villages. The plant has maximum 5 to 8 leaves. There flowery kind of stem from middle of plant (we can see clearly from the picture). It is very small plant.

I don't think that it is Cichorium intybus.

I am not sure but it could be a member of family Amaranthaceae 

Please add one enlargement picture of the spike and the fruits so that we can check it closer. Thanks

This looks like Elytraria imbricata (Acanthaceae) to me. Regards.

I suggest Elytraria acaulis (Acanthaceae)

Elytraria acaulis of family Acanthaceae seems correct.

https://www.flowersofindia.net/catalog/slides/Asian%20Scalystem.html

Fam.  Acanthaceae

Gen.  Elytraria

Thanks for your very useful contribution.

I also agreed with Family Amaranthaceae as the inflorescence looks similar to amaranths. better if dissect the flower 

I already suggested that one enlargement picture of the spike and the fruits would be useful, so that we can check it closer.

This  plant is Elytraria acaulis (L.f.) Lindau (Acanthaceae) commonly grows along the edges of dry deciduous forests and wastelands around villages.

Yes. I agree with Dr. Rasingam. It is Elytraria acaulis.

Enlarged picture of flower

With the spikes it seems to be a member of Amaranthaceae

Thanks to everybody who are contributed valuable suggestions and sharing your knowledge. Now we have now been started working on extraction from the plant.