Chinese Knotweed • Manipuri: অংগোম য়েন্সিল Angom yensil • Marathi: परल Paral • Assamese: Kelnap;

PLANT FOR ID 160 SMP NOV 2009 : Attachments (2). 12 posts by 5 authors.
For ID.
A small tree seen in Mahabaleshwar 8th Nov 2009.
Small white flowers, somewhat like Polygonaceae. Black fruits like Lantana.
Alternate leaves as seen in picture.

My first reaction was Persicaria chinensis. Is it really woody plant?

This is Polygonum auriculata. Have a look at following link..

Polygonum auriculata is synonym of Persicaria chinensis. It is good we thought similarly. I had seen this plant only once 15 years back. It is not tree but a perennial herb, sometimes climbing.

That’s right … It was not a tree. Some plants were small seen by road side, while one in our Hotel (Ramsukh) some drooping branches were observed.

Excellent pic for id. It very clearly shows the typical ocreae which are useful to id Polygonum (in the previous sense).
About the name:
As per Maharashtra Dicot II (BSI)
Persicaria auriculata (Meissn.) Dixit, Datta & Roy is current name
Polygonum auriculatum Meissn. is basionym
Polygonum chinense L. var. ovalifolium Meissn. (used by Cooke) is a synonym
Persicaria chinensis (L.) H. Gros var. ovalifolia (Meissn.) Hara is also a synonym (used in Flora of East. Himalaya)

Thanks for the information.
I had somehow missed the finding about ochrea.
(Description from family info: The leaves are stipulate and the stipules are characteristic of the family. They are usually membranous and forming a complete sheath(ochrea)
Thanks again for pointing me that.

Thanks …, for detailed update

My data was based on FlowersofIndia website. It is nice that plant was identified and verfied fast and soon.

This thread is turning interesting
I just found out that Persicaria auriculata (Meissn.) S. K. Dixit, Datt & G. P. Roy, 1991 is nom. illeg. being a later homonym of Persicaria auriculata (Meisn.) Massam, 1934. So it can’t be used as name for the taxon. I could not find any record of Persicaria chinensis var ovalifolia or Polygonum chinense var ovalifolium from IK, APNI or GCI through IPNI, and am not sure about its validity.

This is what I found from Annotated Checklist of Flowering Plants of Nepal

Persicaria chinensis var. ovalifolia (L.) H. Gross, ; Fl. E. Him. 71 (1966).

  • So if at all our taxon is distinct accepted name should be Persicaria chinensis var. ovalifolia (L.) Gross.

    Interesting indeed. Not the first time that BSI nomenclature has provided food for thought and discussion.

Let’s wait for others to comment. Can someone give details from Flora of Maharashtra by Almeida sir? He, being an expert in nomenclature, must have discussed this controversy to some extent.

‘Polygonum auriculata’ is called ‘Paral’ ‘परळ’ in Marathi.


Kindly identify this Persicaria species. I have forgotten the dimensions of leaves. Flowers and fruits 4-7 mm. Photographed at the Gurukula Botanical Sanctuary growing untended, in Jan 2014.

This is Persicaria chinensis var. ovalifolia.



This Red Knotweed was seen at Mizoram.
Bot. name: Periscaria chinensis
Family: Polygonaceae
Date/Time: 9th Nov./ 01:17PM
Location: Mizoram
Habitat: Wild

Yes! Persicaria chinensis var. ovalifolia (Meisn.) H. Hara. Color variation can be seen in perianth. Common in NE India.


Polygonaceae Fortnight: Periscaria chinensis ?? at Munnar -PKA5 : 3 posts by 3 authors. Attachments (3).

This was earlier identified as Periscaria chinensis…


21st November / 08:00 AM

Location- Place, Altitude, GPS-

Munnar  (Kerala),  ~4800  ft

Habitat- Garden/ Urban/ Wild/ Type-


Plant Habit- Tree/ Shrub/ Climber/ Herb-



 ~ 1 m

Leaves Type/ Shape/ Size-

 Alternate,  4 to 7 cm,  Petiole ~ 1  cm,

Inflorescence Type/ Size-

 Flowers in heads, peduncles hairy

Flowers Size/ Colour/ Calyx/ Bracts-

White coloured

Fruits Type/ Shape/ Size Seeds- 


Other Information like Fragrance, Pollinator, Uses etc.-  

Polygonum sp. (Polygonaceae Family)

This is again Persicaria chinensis var. ovalifolia. As said before, variation can be seen in perianth colour. It could be white, red or pinkish.




Polygonaceae Fortnight : Persicaria chinensis :  6 posts by 4 authors. Attachments (2).
Sharing picture of Persicaria chinensis

from Sindhudurg MH

Yes! Persicaria chinensis var. ovalifolia.

Please identify this plant details of which are as follows( can this be P. chinensis? ):
Date           : 19.08.12                                                            
Location     :Meghamalai hills/ High wavy, Theni dt, Tamilnadu
Altitude      :approx 5000ft
Habitat        :wild
Habit           😕 shrub
Height         😕 2 to 3 ft
Leaves         :as shown
Flowers       :as shown
Fruits           :,

Local name  :do not know

I think yes! Persicaria chinensis var. ovalifolia (Meisn.) H. Hara

Attached are pictures of Persicaria chinensis from Ooty, Tamil Nadu captured in November 2013.

Kindly validate.

Yes! Persicaria chinensis var. ovalifolia.

Thank you … for specifying the correct species ID….


Requesting to please ID this plant captured abundantly growing on the roadside in Ooty in November 2013.

Yes! Persicaria chinensis var. ovalifolia as per another thread.

Persicaria chinensis var. ovalifolia from me too.


ID of Persicaria sp. from Meghalaya KD 02 Nov : 4 posts by 3 authors. Attachments (5)

Attached images are Persicaria Sp. Please ID the plant.  
Date :27.10.2014
Location: Meghalaya
Family : Polygonaceae
Genus & species : Persicaria Sp.
Habitat: Grows wild on open space

Habit :  Herb

Looks like Persicaria chinensis var. ovalifolia (Mesin.) H. Hara

Requesting to please validate ID of this Persicaria sp. captured near Satara, Maharashtra in October 2014.

Is this Persicaria chinensis?

Persicaria chinensis (L.) H. Gross

I also think Persicaria chinensis var. ovalifolia.

Herb id from Bangladesh : 4 posts by 4 authors. Attachments (2)

Photo taken today

It  is Persicaria sp. (may be  Persicaria chinensis var. ovalifolia (Meisn.) H. Hara.

I think … is right. Pl. see Persicaria chinensis var. ovalifolia

I think … is right!


Persicaria? Tohangam,Lohit,Arunachal Pradesh. 3.1.17 : 4 posts by 2 authors. Attachments (3)

Persicaria chinensis var. ovalifolia (Meisn.) H. Hara



SK685 30 JUL-2017:ID : 5 posts by 2 authors. Attachments (8)
Location: Shivapuri National Park, Nepal
Altitude:6500 ft.

Date: 22 July 2017

Some Aconogonum  sp. ???

Koenigia (Aconogonum) species in eFloraofindia (with details/ keys from published papers/ regional floras/ FRLHT/ FOI/ Biotik/ efloras/ books etc., where ever available on net)

I tried all Polygonaceae but did not find a match.

Is the another  post from Soureni also same ?

Is it too Persicaria chinensis (L.) H. Gross  ??

Yes this is Persicaria chinense var. ovalifolia (Meisn.) H. Hara. One may get confused with other species of Persicaria because of its broadly ovate bracts which are prominently visible here at the terminal ends. This species is highly polymorphic and is represented by four varieties.


SK1226 23 JUNE 2018 : 6 posts by 3 authors. Attachments (7) – around 600 kb each.
Location:  Sakiyong Khasmahal, Pedong Reshi Rd, India
Date: 16 May 2018
Altitude: 5550 ft.
Habit : Wild
Polygonaceae ???

I think Persicaria chinensis var. ovalifolia (Meisn.) H.Hara

SK1227 23 JUNE 2018 : 7 posts by 3 authors. Attachments (5)- around 500 kb each.
Location:  Sakiyong Khasmahal, Pedong Reshi Rd, India
Date: 16 May 2018
Altitude: 5550 ft.
Habit : Wild
Polygonaceae ???

I think Persicaria chinensis var. ovalifolia


Persicaria chinensis or Polygonum auriculata?
Near Kas Mah.

At first, it looks like Persicaria chinensis var ovalifolia only.

As per TPL, there are two Persicaria auriculata (Both unresolved): P auriculata (Meisn.) S.K.Dixit, Datt & G.P.Roy and P. auriculata (Makino) Masam. I’ve not seen any of these either in field or herbarium sheets so refraining myself to comment on the photographs.

Experts may comment.


SK728 26 AUG-2017:ID : 4 posts by 2 authors. Attachments (5)

Location: Shivapuri National Park, Nepal
Altitude: 7500 ft.
Date: 24 November 2012
Aconogonum campanulatum (Hook. f.) H. Hara ?? Or its variation. or some other ??

I think do not match your images of the same species at 


Persicaria chinensis var. ovalifolia (L.) H. Gross




Annotated checklist of Flowering plants of Nepal (Persicaria chinensis var. ovalifolia (L.) H. Gross)  GRIN (Persicaria chinensis (L.) H. Gross) The Plant List Ver 1.1 (Unresolved) Tropicos  India Biodiversity Portal  

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