Persicaria pubescens (Blume) H. Hara, J. Jap. Bot. 17:335. 1941(syn: (=) Polygonum flaccidum auct.; (≡) Polygonum pubescens Blume (basionym); (=) Polygonum roettleri Roth) as per GRIN;
Polygonum pubescens Blume, Bijdr. Fl. Ned. Ind. 2: 532 532 1825. (syn: Persicaria flaccida (Meisn.) Nakai ex Sasaki; Persicaria flaccida (Meisn.) H. Gross; Persicaria hydropiper subsp. flaccida (Meisn.) Munshi & Javeid; Persicaria hydropiper subsp. microcarpa (Danser) Soják; Persicaria pubescens (Blume) H. Hara; Persicaria pubescens var. acuminata (Franch. & Sav.) H. Hara; Polygonum donii Meisn.; Polygonum flaccidum Meisn.; Polygonum flaccidum var. hispidum (Buch.-Ham. ex D. Don) Hook. f.; Polygonum hispidum Buch.-Ham. ex D. Don; Polygonum hydropiper var. acuminatum Franch. & Sav.; Polygonum hydropiper var. flaccidum (Meisn.) Steward; Polygonum hydropiper var. hispidum (Buch.-Ham. ex D. Don) Steward; Polygonum hydropiper subsp. microcarpum Danser; Polygonum oryzetorum Blume) as per The Plant List;
Common name: Drooping Knotweed • Marathi: Sisori • Nepali: पिरे Pire

ID of Polygonum sp from Assam KD 19.Jan 2015 : 3 posts by 2 authors. Attachments (7)
Attached images seem to be Polygonum sp. Please ID the plant.
Date :23.01.2015
Location: Assam
Family : Polygonaceae
Genus & species : Polygonum sp (?)
Habitat: Grows wild on open space
Habit : Herb

Looks like Persicaria pubescens (Blume) Hara
Family: Polygonaceae


Flora of Manipur: Polygonum posumbi : Attachments (2).  15 posts by 6 authors.

Polygonum posumbi from Manipur.

… kindly check , this plant new to me hence when I went for a google search it did not gave me any result

There is a typo error. Pl check for Persicaria posumbu.

Now correctly placed as Persicaria posumbo (Buch.-Ham.ex D. Don) H. Gross (syn: Polygonum posumbo Buch.-Ham. ex D. Don; P. cespitosum Blume; Persicaria cespitosum (Blume) Hara).

Persicaria posumbu flowers are supposed to be short-stalked, but the flowers in your picture are on long slender stalks.

I suppose this plant to be Persicaria pubescens (Blume) H. Hara. A close scrutiny of the perianth will confirm the identity which should be glandular punctate.

Forgot to attach one link for comparison.

Seeing the images on this page
Persicaria pubescens seems to be the right ID!

Thanks …, finally u got the right id.

Thanks … for raising doubt that paved way for correct id.

Yes …, Real credit should go to … for the correct ID. Firstly, I also thought to go with Persicaria posumbu but after his query, I explored a little more and got the correct ID.


Polygonaceae fortnight Polygonum pubescens Blume SN May05 : 1 post by 1 author. Attachments (2).
Polygonum pubescens Blume (= P. hydopepper var. flaccidum (Meisn.) Steward, P. flaccidum Meisn),
slender erect herb in the hill stations. Gudalur near Ooty, Tamilnadu

Persicaria pubescens syn Polygonum pubescens : 2 posts by 2 authors. Attachments (4)

Sharing some pictures of P. pubescens shot at Kakani Nepal on 28 July 2016 at 2230 m.

ID validation please !

I think appear similar to other images at Persicaria pubescens

Persicaria pubescens (Bl.) Hara (accepted name)

Nepali Names : लाटो पिरे Laato Pire / सेतो पिरे Seto Pire




References:GRIN (Persicaria pubescens (Blume) H. Hara) Flora of Pakistan (Persicaria pubescens (Blume) Hara) Annotated checklist of Flowering plants of Nepal (Persicaria pubescens (Blume) H. Hara)  The Plant List  Tropicos  IUCN Red List (LC)  Flora of China Flowers of India (Polygonum pubescens)   India Biodiversity Portal (Persicaria pubescens)
PFAF   Persicaria pubescens (Blume) H. Hara  Weblio

Leave a Reply

Your email address will not be published. Required fields are marked *