Persicaria nepalensis (Meisn.) Miyabe, J. Fac. Agric. Hokkaido Imp. Univ. 26: 514 1934. (syn: Cephalophilon nepalense (Meisn.) Tzvelev; Persicaria alata (Buch.-Ham. ex D. Don) Nakai; Persicaria nepalensis (Meisn.) H. Gross; Persicaria punctata var. eciliata Small ..; Polygonum acre var. brachystachyum Meisn. ….; Polygonum alatum Buch.-Ham. ex D. Don .; Polygonum antihaemorrhoidale var. aquatile Mart. ..; Polygonum nepalense Meisn. .; Polygonum perforatum Meisn. .; Polygonum punctatum var. alatum Buch.-Ham. ex D. Don ……………; Polygonum quadrifidum Hayata; Polygonum robustius (Small) Fernald);
.
Eritrea to KwaZulu-Natal, Madagascar, Tropical & Subtropical Asia: Afghanistan, Assam, Burundi, Cameroon, China North-Central, China South-Central, China Southeast, East Himalaya, Eritrea, Ethiopia, Gulf of Guinea Is., Hainan, India, Inner Mongolia, Jawa, Kenya, Khabarovsk, Korea, Kuril Is., KwaZulu-Natal, Laos, Madagascar, Malawi, Malaya, Manchuria, Myanmar, Nepal, New Guinea, Northern Provinces, Pakistan, Philippines, Primorye, Qinghai, Rwanda, Sakhalin, Sri Lanka, Sudan, Tadzhikistan, Taiwan, Tanzania, Thailand, Tibet, Uganda, Vietnam, West Himalaya, Yemen, Zambia, Zaïre as per POWO;
.
Nepal knotweed, Nepal smartweed, Nepal Persicaria; Hindi: Kangany, Machan-pilu; Punjab: Sat balon;
.

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Plant of Mount Slamet:
A herb 20 cm tall. Flowers pink. ID is requested. Thank you.


Looks more like our Polygonum nepalense. Please check from species reported from the area.


Agree with …



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Herb for id 231210MK1:
Please help to id this herb under a rotting wood found at Bryants park, Kodaikanal.

Date/Time- 06-11-2010 / 1:00 PM
Location- Place, Altitude, GP ca.2100asl; Kodaikanal, TN
Habitat- Garden/ Urban/ Wild/ Type- as a weed;
Plant Habit-herb
Height/Length- ca. 15cm
Leaves Type/ Shape/ Size- 2.5 x 1.5 cm
Inflorescence Type/ Size- terminal;
Flowers Size/ Colour/ Calyx/ Bracts- pinkish


this herb has been reported from Nilgiris, Kodaikanal and also in Yercaud. I think this is a native of Himalayas.



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Plant for ID from Paddar valley J&K. 161211 SRANA 02:
Request for Identification

Kindly identify the plant.
Date: 28th July 2011.
Location: Paddar valley district Kishtwar J&K.
Altitude: 2200 meters asl.
Plant height: 50-60 cms
Habit/Habitat: Wild herb usually seen in marshes.


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Polygonaceae for identification 140812MK01:

Please help me to identify this Polygonaceae herb found in the roadsides and fallow lands near Sholayar of western ghats.
Leaf: 5 cm long
Flower: 0.3cm across; white
stem red
Place: Sholayar, Valparai, TN
Date: 02 Aug 2012
Alt.: 1050 m asl

Yes, Persicaria sp. A chance for Persicaria nepalensis (Meisner) Gross?


Yes…looks like Persicaria nepalensis to me too.


Many thanks for the identification. Yes this is Persicaria nepalensis ( Meisn. ) H.Gross of Polygonaceae.



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VoF Week: Plant for ID:
Seen this plant at Govindghat on 16.08.2012. For ID please.


Polygonum nepalense now known as Persicaria nepalensis



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VoF Week: 16092012 BS-2 Polygonaceae Herb-2 for id from way to Govindghat- Ghangriya:
Polygonaceae Herb-2 for id from way to Govindghat- Ghangriya


Persicaria nepalensis



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Hello : delicate beauty from Mahabaleshwar : Persicaria nepalensis ( Polygonaceae):
Persicaria nepalensis (Polygonaceae) : Small beautiful annual herb.
This delicate beauty I clicked at Mahabaleshwar on 15th Sept. 2012.

Mahabaleshwar altitude is around 4400 ft. I had also spotted this plant at Raireshwar (approx same altitude).



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persicaria nepalensis, mahabeleshwar:
persicaria nepalensis, last week in mahabeleshwar
from the polygonaceae family
small herb with tiny flowers


Yes … Nice photographs


While looking at the mahabeleshwar photographs, I realised that there were some of the pink variety as well.
Attaching one of those
These flowers were tiny and very easy to miss


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Polygonaceae fortnight : Persicaria nepalensis :  3 posts by 3 authors. Attachments (1).
here is picture of Persicaria nepalensis from Dhanaulty

Yes! Correct ID…beautiful picture!!



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This is a frequent herb of monsoons, shot from Chakrata..
Persicaria nepalensis..

Yes! Beautifully captured!



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SK695 02 AUG-2017:ID : 7 posts by 3 authors. Attachments (8)
Location: Nagarkot, Nepal
Altitude:6600 ft.
Date: 20 June 2017 
Persicaria ..???

Yes, …


I think Persicaria nepalensis (Meisn.) H. Gross
Family: Polygonaceae.



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Persicaria nepalensis (Meisn.) Miyabe : 3 posts by 2 authors. Attachments (7)
Location:  Kharidhunga, Dolkha, Nepal
Date: 6 September 2017
Elevation : 7700 ft.

 


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Persicaria nepalensis (Meisn.) Miyabe ??? : 5 posts by 2 authors. Attachments (7)
Location:  Deurali, Dolkha, Nepal
Date: 6 September 2017
Elevation : 7700 ft.
Plant matted to the ground and approximately 10 cm. high!

Yes, to me also appear close to images at Persicaria nepalensis



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SK621 06 JUL-2017:ID : 4 posts by 3 authors. Attachments (8)
Location: Soureni, Mirik, India
Date: 18 May 2017
Altitude: 4500 ft.
Persicaria …????

Most likely Persicaria nepalensis



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persicaria nepalensis : 2 posts by 2 authors. Attachments (3)
Persicaria nepalensis seen near Chopta at a slightly lower altitude probably around 7,500

 


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Polygonaceae Fortnight- Persicaria nepalensis “white” from Gori Valley :: NS May 21 :  4 posts by 3 authors. Attachments(5).
This herb was shot from Gori Valley area, perhaps this is again Persicaria nepalensis with white flowers..


Yes! Persicaria nepalensis! Perianth shows color variation from white to pink. Thanks for sharing.



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POLYGONACEAE FORTNIGHT 1-14 May 2014: Persicaria nepalensis from Uttarakhand_DSR_2 : 3 posts by 3 authors. Attachments (1).
Persicaria nepalensis (Meisn.) Miyabe is a common creeping herb on moist slopes in temperate and subalpine areas of Uttarakhand. Flowers may be pink or white.
Shot near Girgaon, Munsyari area of Uttarakhand.


yes …



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Persicaria capitata
Pink Knotweed, Pink-head knotweed
Place: Gangtok, Sikkim

I think this is Persicaria nepalensis (Meisn.) Miyabe


Seems Persicaria alata Syn: Polygonum alatum – a common weed in moist places/cultivated fields ?


Thanks for your input …!
As per The Plant List, Persicaria alata (Buch.-Ham. ex D. Don) Nakai is a synonym of P. nepalensis (Meisn.) Miyabe.
Here is the link for your kind perusal


Yes now known as Persicaria nepalensis

 


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Polygonaceae Fortnight: Persicaria nepalense from Kashmir-GSMAY42 : 2 posts by 2 authors. Attachments (6).
Persicaria nepalensis (Meisn.) Miyabe
syn: Polygonum nepalense Meisn.; P. alatum Buch.-Ham. ex D. Don
Photographed from Gulmarg, Kashmir


Yes! Thanks for sharing!



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Polygonaceae Fortnight: Persicaria nepalensis from Manali-GSMAY43 : 2 posts by 2 authors. Attachments (3).
Persicaria nepalensis, photographed from Manali.



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Polygonaceae Fortnight: Persicaria nepalensis from Chopta, Uttarakhand pl. validate-GSMAY43 :2 posts by 2 authors. Attachments (3).
Persicaria nepalensis photographed near Chopta in Uttarakhand, pl. validate

Yes! P. nepalense.



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*Persicaria nepalensis ABAUG01/13 : 4 posts by 3 authors. 4+3 images.
Apart from the Pink Knotweed (Persicaria capitata) we have this one too. Here are some photographs.
I am not sure of the last three photographs which may not belong here. Please advise.
Persicaria nepalensis (Nepal Knotweed)
Above Mcleodganj, Dharamshala, HP
1800m
15-16 August 2015
I found this one on the ground–not tall like the others, leaves larger, the red edges more prominent. Looks slightly different from the others but I can’t think what else it could be. Please advise if I am wrong in putting it here with P. nepalensis.

Yes! All pictures belong to Persicaria nepalensis (Meisn.) Miyabe. Family: Polygonaceae


I photographed this yesterday. Is this also P. nepalensis or a different knotweed? Unlike my other photos last year this one has very prominent black V marks but I understand that these can be variable in a species. Please advise. 2 images.


I think this is again Persicaria nepalensis. Winged petioles are characteristic.



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Persicaria nepalensis (Meisn.) H. Gross : 4 posts by 2 authors. Attachments (8)
Sharing some pictures I guess is Persicaria nepalensis (Meisn.) H. Gross shot at Chandragiri Hill Kathmandu on 19 September 2016 at 8200 ft.

Flower colors are pink, so could it be ‘white’ not the Persicaria nepalensis (Meisn.) H. Gross


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Location: Raniban, Balaju, Nepal
Date: 26 August 2016
Altitude: 4800 ft.

Thanks …, for sharing the images of P. nepalensis.


Is it correct ID ?


Yes! Your ID is correct



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Fwd: Persicaria chinensis (L.) Nakai (accepted name) ??? : 5 posts by 3 authors. Attachments (7)
Location: Raniban, Balaju, Nepal
Date: 26 August 2016
Altitude: 4800 ft.

I can see the winged petiole in some images. This could be Persicaria nepalensis (Meisn.) Miyabe



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SK621 06 JUL-2017:ID : 3 posts by 3 authors. Attachments (8)
Location: Soureni, Mirik, India
Date: 18 May 2017
Altitude: 4500 ft.
Persicaria …????

Most likely Persicaria nepalensis



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Persicaria nepalensis (Meisn.) H. Gross ?? : 8 posts by 4 authors. Attachments (7)- around 500 kb each.
Location: Jitpur Phedi, Nepal
Altitude : 5000 ft.
Date: 19 June 2018
Habit : Wild  

To me also appear close to images at Persicaria nepalensis

Yes, Persicaria nepalensis (Meisn.) H.Gross


yes Dinesh has a beautiful image and shows all the salient features. you pictures are beautifully detailed also. pleasure to watch


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Persicaria nepalensis : 4 posts by 3 authors. Attachments (3)
Persicaria nepalensis
Eravikulam WLSMunnar, Kerala, in the Nilgiris. First week of October 2018

Thanks for sharing the beautiful images of Persicaria nepalensis.


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SK1643 13 Dec 2018 : 5 posts by 2 authors. Attachments (4)- around 400 kb each.
Location Gyaneswor, Kathmandu, Nepal
Elevation :  4500 ft.
Date 28 September 2014
Habit : Wild 
Which Persicaria ..??

Do you have more photographs? At least of the habit and ochrea?

Sorry, I do not have other images. It is from my old collection.

Thanks for your reply. This looks close to Persicaria nepalensis (Meisn.) H. Gross, but I cannot confirm based on these images.


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SK 2165 30 August 2019 : 3 posts by 2 authors. Attachments (6)- around 600 kb each.
Location: Nagarkot,, Kathmandu
Date: 03 August  2019
Elevation: 1888 m.
Habit : Wild 
Does not look like Persicaria nepalensis (Meisn.) H. Gross , does it ?

To me, it looks like Persicaria nepalensis (Meisn.) H. Gross


.


Persicaria sagittata (L.) H. Gross : 12 posts by 2 authors. 10 images- 5 to 7 mb each.
Location: Badikhel, Lalitpur
Date: 19 September 2020
Elevation: 1734 m.
Habit : Wild

Thanks … for sharing the images. To me, they look like Persicaria nepalensis only.
You can find P. sagittata here:
/species/m—z/po/polygonaceae/persicaria/persicaria-sagittata


Thank you … for the correction. Actually I had cross checked still missed.



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Satpura Tiger Reserve, 24-8-09; Polygonum nepalense 31209 – NSD 116 – efloraofindia | Google Groups


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Polygonaceae Fortnight- Polygonum? for id from Gori valley area:: NS May 30 : 11 posts by 5 authors. Attachments (3).
This delicate herb was shot from Gori valley area.. still lies unidentified with me.. tentatively I have placed this under Polygonum

Polygonum nepalense Meisn. is an interesting plant. It comes under P. alatum Ham. in FBI. It was also referred to in P. khasianum Cas.


Wondering how this plant missed my attention!
For me this is Persicaria sagittata (L.) H. Gross.. characterized by the sagittate leaves.
Thanks for sharing the beautiful images Sir! 

Thanks … for inputs.. thanks … for identification…


Thanks once again …, but how do you explain – “perianth white ….. or red, ….. not becoming blue” as in FoNA, and also absence of at least 5 mm petiole, besides some other points?


Thanks for your efforts … Perianth color is variable and taxonomically less important (at least in Persicaria)…this blue seems to be an intermediate between white and pink. Further we can see the terminal leaves here with no petiole….’ll get them as you go down.
Putting a link for your kind perusal. Hope the confusion will go.
http://apps.kew.org/herbcat/getImage.do?imageBarcode=K000831063
Waiting to hear from you.


Thanks a lot …, I am really grateful for addressing my concern. I put down my explanation (in favour of P, nepalensis) –

  • perianth can be white to pinkish or lavender; urceolate – FoNA
  • upper leaves subsessile or clasping FoC; cordate to amplexicaul with a auricled base FoP; please also see entry in FBI. v. 41
  • in P sagittata leaf margin is entire, also in P. nepalensis. But, the 2nd pic shows finely serrulate margin – is that a leaf? or is it a involucral leaf? Whatever it maybe the same margin can be seen in Balkar Sir’s upload – efi thread
  • some more images, assuming the ID there is correct – http://www.actaplantarum.org/floraitaliae/viewtopic.php?t=9070

I would request you to check Flora of British India also, because there are several var. under P. alatum Ham. and give your final verdict which I will accept whatever it may.


Thanks a lot … for your concerns.
I am happy that you are not blindly following my words. This inquisitiveness makes you different. But anyway, I am going to stick with my ID as the sagittate leaves are very clear in the photographs. Further, I’ve seen P. nepalense many times in field/herbaria but never found the same leaves (as in pics) anywhere. Identity in the links provided by you is correct and they definitely are P. nepalense


I accept … Thank you very much for spending some time over it.


Yes this plant looks very different from … plant in which although upper leaves are clasping, the lower clearly show leaves with winged petiole. … plant is quite different, much more delicate, with clearly sagittate leaves. Thanks …., for introducing an interesting member of Polygonaceae.


I think Persicaria nepalensis only as per images and details herein and as per discussions at SK120OCT02-2016:ID


I think this is P. sagittata.


It does not match with P. sagitata as per POWO specimen 1 and two and GBIF specimens from Nepal and India– one and two


Thanks for your comments! May I request … to upload more pictures if available?



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SK120OCT02-2016:ID : 10 posts by 3 authors. Attachments (9)
Sharing some pictures for ID shot at Chandragiri Hill Kathmandu on 19 September 2016 at 8200 ft.

Could it be Fagopyrum or Persicaria??


Thanks for sharring …
This is interesting! Looks close to Persicaria sagittata (L.) H.Gross. Please share more images of leaf, if you have.

Inserting some pictures as advised.
Attachments (13) 

Yes! It looks like Persicaria sagittata (L.) H. Gross (Polygonaceae) to me.


I feel this looks different from P. sagitata since the stem does not have downward spines.
It May be close to P. nepalensis like Persicaria sagittata (L.) H. Gross ??


You appear to be right as it does not match with P. sagitata as per POWO specimen 1 and two and GBIF specimens from Nepal and India– one and two.
Appears close to P. nepalensis only as per GBIF specimens from Nepal– one and two



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SK890 07 DEC-2017:ID : 11 posts by 3 authors. Attachments (7)

Location: Ranikot, Bhaktapur, Nepal
Altitude: 6200 ft.
Date: 7 October 2017
Persicaria. Which one? 

Thanks … for sharing these images.
I think this is Persicaria sagittata (L.) H.Gross
Polygonaceae

Please also check the high resolution image of DSC_0451 for the presence of recurved prickles. There seems to be mixture of P. nepalense as well. DSC_457, 459, 448 and 450 are not matching well with P. sagittata. They are probably P. nepalense.


P. sagittata is a polymorphic species. Pl see the quote from Fl. China:
Polygonum sagittatum s.l. is an extremely variable species and known from both Asia and North America. Some authors have pointed out, on the basis of differences in achene surface and leaf margin, that North American populations are separable from Asian ones, and have treated them as two distinct varieties of Psagittatum, or as two distinct species: Psagittatum in North America and Psieboldii in eastern Asia. In Park’s previous taxonomic monograph of P. sect. Echinocaulon(Syst. Bot. 12: 167–179. 1987; and Mem. New York Bot. Gard. 47: 1–82. 1988), Psagittatum and Psieboldii are recognized as conspecific mainly based on flavonoid chemistry and also the observation that North American plants are well within the range of variability of eastern Asian ones. However, the recent molecular analyses of North American and eastern Asian populations of Psagittatum (Park, in prep.) show that these disjunct populations are genetically somewhat divergent from each other. The degree of genetic divergence, however, strongly suggests that they can be recognized either as a single polymorphic species (Psagittatum s.l.) or two distinct varieties of Psagittatum, but they can hardly be treated as two distinct species.

I think it is one plant only.
Enclosing link for earlier post for cross reference.

On closer scrutiny of posted images, I also feel they are from the same plant.
I should I take these as Polygonum sagittatum ?

Please also check the high-resolution image of DSC_0451 for the presence of recurved prickles.

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Image quality not so good. Please let me know if it is ok ?
Attachments (2)


I think Persicaria nepalensis only as per images and details herein and as per discussions at SK120OCT02-2016:ID


I guess you are right


Yes, P. nepalensis for me too.


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Please have a look on this plant from Poonch jandk: 2 images.
Date: 4-9-2021


Please check Persicaria.


Pl. post image of the complete plant and also with side views.


Persicaria nepalensis (Meisn.) Miyabe !


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Persicaria nepalensis (Meisn.) H. Gross: 5 very high res. images.
Location: Dailekh, West Nepal
Altitude: 2230m.
Date: 12 August 2021
Habit : Wild


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Persicaria nepalensis (Meisn.) H. Gross: 3 very high res. images.

Location: Kalikot, West Nepal
Altitude:  2535 m.
Date: 15 August 2021
Habit : Wild

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Persicaria nepalensis (Meisn.) H. Gross: 5 very high res. images.

Location: Jumla, West Nepal
Date: 25 August 2021
Altitude: 2500 m.
Habit : Wild

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Identification required 1047: 3 high res. images.
Location Bangus valley Handwara kashmir


Persicaria nepalensis (Meisn.) H. Gross


Yes Persicaria nepalensis


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Identification required 675: 3 high res. images.

Location: Kulgam

Habitat: Semi damp places 

Persicaria nepalensis (Meisn.) H.Gross



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References:

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