Polygonum

 

As per efi thread :
Treatments of Polygonum and related genera (subfamily Polygonoideae) those by Haraldson and Ronse Decraene & Akeroyd, have segregated species of Polygonum in the broad sense adopted into two separate tribes, Polygoneae and Persicarieae. The remainder of Polygonum in the broad sense is generally assigned to Persicaria (or a varying number of segregate genera, such as Aconogonon and Bistorta) which, with Antenoron and Koenigia, comprises the tribe Persicarieae.
Characters for segregation of Two species:
Polygonum: . Flowers axillary, solitary or in small clusters, sometimes forming lax leafy spikes. Perianth (4- or)5-parted, not enlarged in fruit. Stamens 5-8, reduced in number in outer whorl; filaments, especially the inner, strongly dilated at base.
Persicaria: Inflorescence spicate, spikes usually several. Tepals fused for about 1/3 their length. Nectaries free, globular. Styles 1, bifid or trifid.
  
 
Binomial Habit Notes References Distribution
Polygonum dichotomum Blume (= Persicaria dichotoma (Blume) Masam.) var. angustissima (Hook.f.) Chandrasekaran HerbWestern Ghats, Evergreen ForestsFlora of Tamil Nadu, VOL. II, 1987Nilgiri
Polygonum dichotomum Blume (= Persicaria dichotoma (Blume) Masam.) var. nilagirica (Hook.f.) ChandrasekaranHerbWestern Ghats, Evergreen ForestsFlora of Tamil Nadu, VOL. II, 1987; Gage 1903Dindigul, Nilgiri
Polygonum dichotomum Blume (= Persicaria dichotoma (Blume) Masam.) var. robusta (Hook.f.) ChandrasekaranHerbWestern Ghats & Eastern Ghats, Evergreen ForestsFlora of Tamil Nadu, VOL. II, 1987Nilgiri, Salem, Theni
Polygonum glabrum Willd. var. glabrum = Persicaria glabra (Willd.) M. GómezHerbPlains, AquaticFlora of Tamil Nadu, VOL. II, 1987All districts
Polygonum glabrum Willd. var. scabrinervis Hook.f.HerbWestern Ghats, Evergreen ForestsFlora of Tamil Nadu, VOL. II, 1987Dindigul
Polygonum minus Huds. = Persicaria minor (Huds.) OpizHerbWestern Ghats, Evergreen Forests, Marsh LocalitiesFlora of Tamil Nadu, VOL. II, 1987; Gage 1903Coimbatore, Dindigul, Nilgiri, Tirunelveli
Polygonum molle D.Don = Aconogonon molle (D. Don) H. HaraShrubWestern Ghats, Cultivated/Naturalized, Native of  HimalayasFlora of Tamil Nadu, VOL. II, 1987Nilgiri
Polygonum orientale L. = Persicaria orientalis (L.) SpachHerbWestern Ghats & Eastern Ghats, Moist Deciduous Forests, Marsh LocalitiesFlora of Tamil Nadu, VOL. II, 1987Dindigul,  Namakkal, Theni, Tiruvannamalai, Vellore,  Viluppuram
Polygonum plebeium R. Br.HerbPlains to  High Altitude, Dry LocalitiesFlora of Tamil Nadu, VOL. II, 1987All districts
Polygonum sphaerocephalum Wall.ex Meisner is a synonym of Polygonum microcephalum var. sphaerocephalum (Wall. ex Meisn.) H. HaraCreeping HerbWestern Ghats, Evergreen ForestsFlora of Tamil Nadu, VOL. II, 1987Nilgiri, Theni
Polygonum strigosum R. Br. is a synonym of Persicaria strigosa (R.Br.) NakaiHerbWestern Ghats, Evergreen Forests, Marsh LocalitiesFlora of Tamil Nadu, VOL. II, 1987Dindigul,  Nilgiri, Theni

Persicaria attenuata ( R.Br. ) Sojak subsp. pulchra (Blume) K.L.Wilson (Syn: Polygonum pulchrum Blume)HerbAquaticFlora of Tamil Nadu, VOL. II, 1987Coimbatore, Theni,  Tirunelveli, Vellore 

 
 
 
 
 
 
 
 
 
Polygonum flaccidum ROXB. (? Polygonum flaccidum Meisn.is a synonym of Polygonum pubescens Blume)
 
 
 
 
 
 
 
 
Polygonum posumbi HAM. = Persicaria posumbu (Buch.-Ham. ex D. Don) H. Gross
 
 
 
 
 
 
 
 
 

 
 
Botanical name Synonyms Family Common name
Polygonum affine = Bistorta affinis (D. Don) GreenePersicaria affinis, Polygonum brunonis, Polygonum donianumPolygonaceae Himalayan Fleeceflower
Polygonum aviculare subsp. depressum = Polygonum arenastrum BoreauPolygonum aviculare var. depressum, Polygonum calcatum, Polygonum arenastrumPolygonaceae Prostrate Knotweed
Polygonum aviculare Avicularia vulgaris, Polygonum erectum, Polygonum heterophyllumPolygonaceae Common Knotgrass
Polygonum filicaule = Koenigia nepalensis Koenigia nepalensisPolygonaceae Nepal Purslane
Polygonum milletii Bistorta milletii, Persicaria milletiiPolygonaceae Crimson Knotweed
Polygonum molle = Aconogonon molle (D. Don) H. HaraPolygonum molle, Aconogonum molle, Persicaria mollisPolygonaceae Sikkim Knotweed
Polygonum paronychioides Polygonaceae Fuzzy Knotweed
Polygonum plebeium Polygonum plebejumPolygonaceae Small Knotweed
Polygonum pubescens = Persicaria pubescens (Blume) H. HaraPersicaria pubescens, Polygonum flaccidum, Polygonum roettleriPolygonaceae Drooping Knotweed
Polygonum recumbens Polygonum mirajabiiPolygonaceae Creeping Knotweed
Polygonum runcinatum Persicaria runcinataPolygonaceae Lobed Leaf Knotweed
Polygonum sibiricum var. thomsonii = Knorringia sibirica subsp. thomsoniiKnorringia pamirica, Knorringia sibirica subsp. thomsonii, Polygonum pamiricumPolygonaceae Pamir Knotweed
Polygonum tortuosum = Aconogonon tortuosum (D. Don) H. HaraAconogonum tortuosum, Polygonum tortuosum var. tibetanumPolygonaceae Twisted Knotweed
Polygonum vacciniifolium = Bistorta vacciniifolia (Wall. ex Meisn.) GreeneBistorta vaccinifolia, Persicaria vaccinifoliaPolygonaceae Rose Carpet Knotweed

 
Polygonum ganderbalensis (? Polygonum ganderbalense Munshi & Javeidis a synonym of Polygonum aviculare L.)
 

Polygonum capitatum = Persicaria capitata (Buch.-Ham. ex D. Don) H. Gross
Polygonum forrestii = Koenigia forrestii (Diels) Mesícek & Soják
Polygonum glabrum = Persicaria glabra (Willd.) M. Gómez
Polygonum posumbu = Persicaria posumbu (Buch.-Ham. ex D. Don) H. Gross
 
Flora of Davanagere District, Karnataka, India By B. K. Manjunatha, V. Krishna, T. Pullaiah (2004)- Details with keys-
 
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
 
Gardening in India By George Marshall Woodrow, G Marshall (1986)- Details-
 
 

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.