From Floral Database of Tamilnadu :


Polygonum molle D.Don = Koenigia mollis (D. Don) T. M. Schust. & Reveal ShrubWestern Ghats, Cultivated/Naturalized, Native of HimalayasFlora of Tamil Nadu, VOL. II, 1987Nilgiri


Botanical nameSynonymsFamilyCommon name
Polygonum molle = = Koenigia mollis (D. Don) T. M. Schust. & Reveal Polygonum molle, Aconogonum molle, Persicaria mollisPolygonaceae Sikkim Knotweed
Polygonum tortuosum = Koenigia tortuosa (D. Don) T. M. Schust. & RevealAconogonum tortuosum, Polygonum tortuosum var. tibetanumPolygonaceae Twisted Knotweed

Aconogonon rumicifolium synonym for Koenigia rumicifolia (Royle ex Bab.) T.M.Schust. & Reveal Aconogonum rumicifolium, Polygonum rumicifolium Polygonaceae Dock-Leaf Knotweed

Polygonum forrestii = Koenigia forrestii (Diels) Mesícek & Soják  

Forest Plants of Eastern India By Amal Bhusan Chaudhuri (1993)-
Polygonum islandicum (L.) Hook.f.is a synonym of Koenigia islandica L.
Polygonum perpusillum Hook. f.is a synonym of Bistorta perpusilla (Hook.f.) Greene
Polygonum sinuatum Royle ex Bab.is a synonym of Persicaria sinuata (Royle ex Bab.) Rajbh. & R.Joshi
Polygonum sphaerostachyum Meisn.is a synonym of Polygonum macrophyllum D. Don

I have updated eFI (efloraofindia) page on Aconogonon, Bistorta, Fagopyrum, Fallopia, Koenigia, Persicaria, Polygonum & Rubrivena

Attempts have been made to incorporate most of the species available in India & nearby areas with details & keys directly or through links as far as possible. It’s quite possible that there may be some discrepancy in the accepted names & synonyms taken from other links.

Species discussed so far in efloraofindia are given at the bottom of the page in the form of links against Subpages. On clicking them one can see all the details.

If someone can provide complete list of Indian species with source references it will be wonderful.

Any comments/ corrections are welcome.

In my opinion most of the above genera should be treated under Polygonum sensu lato.  I am working on Indian Polygonaceae but it needs thorough field work. The taxonomic complexes are to be solved with the help of SEM/Molecular studies. I have listed all Indian species but it is not yet published.
Thanks a lot, ... I have taken GRIN as the basis as it relied on the latest litrature published in 2011 or 2012. Other efloras & The Plant List etc. has also been considered where ever a taxa is not available in GRIN.
As & when new findings are published it can be updated again.