Persicaria stagnina (Buch.-Ham. ex Meisn.) Qaiser, Fl. Pakistan 205: 44 44 2001. (Syn: Persicaria barbata subsp. stagnina (Buch.-Ham. ex Meisn.) Soják; Persicaria barbata var. stagnina (Buch.-Ham. ex Meisn.) Grierson; Polygonum barbatum var. stagninum (Buch.-Ham. ex Meisn.) Steward; Polygonum conspersum Meisn.; Polygonum stagninum Buch.-Ham. ex Meisn.);
Indian Subcontinent to Peninsula Malaysia: Assam, Bangladesh, East Himalaya, India, Malaya, Myanmar, Pakistan, Thailand, West Himalaya as per POWO;
Persicaria for id RV1 : 11 posts by 5 authors. Attachments (7).
Please id this Persicaria sp. from a river bed in Thane district.
Pictures taken on 29th December 2013 and today. (22.2.14)
Flowers white, slightly pink, stamens 5 – 7, leaves mostly green and a few with purple blotches, pubescent and slightly pale beneath, stems hairy, nuts black. the racemes are fairly short and slender. Whole plant about 2ft in height.
I think Persicaria barbata (L.) Hara
please check for P. hydropiper.
Thank you … for your replies.
Thanks for your comments … I guess the leaves are strigosely hairy below in the posted plant (as seen in P 1200395.JPG). But, if we follow the key provided in Fl. Pakistan, cilia should be much shorter than the tube. Still I’ll go with your identification as the strigose character seems more reliable to me. Further, as per the updated nomenclature, the plant should be treated as a distinct species i.e Persicaria stagnina (Buch.-Ham. ex Miz.) Qaiser. But please check your plant/specimen one more time for the above mentioned characters.
I appreciate your detailed reply.
Thanks for the clear photographs …! I appreciate your photography skills!! Further I would say the characters are pointing towards P. stagnina. Experts may add their view.
Thanks … for sharing this plant.
I would have not given a second thought for querying the ID, and would have taken for granted the plant as Persicaria glabra.
Thanks to … for the discussion, and getting nearer to the ID.
Thanks to you all for comments and especially to Ritesh ji for looking into this plant in such detail.
Date/Time- 10-02-2011 / 1:00 PM
Location- Place, Altitude, GPriver in Nilgiris RF; TN. c 350 msl
Habitat- Garden/ Urban/ Wild/ Type- wild, riparian
Height/Length- c. 70 cm
Leaves Type/ Shape/ Size- c. 7 X 2 cm
Inflorescence Type/ Size- raceme; up to 6cm long
Flowers Size/ Colour/ Calyx/ Bracts- pink; c 0.3cm across
Can it be Persicaria hydropiper
I’ll go with Persicaria posumbu.
I think this id as Persicaria posumbu (Buch.-Ham. ex D. Don) H. Gross may need to be considered again as I do not find and distribution in the area as per POWO, CoL, FoPI, BSI Flora of India checklist
Pl. post high res. images to check the details.
It may be Persicaria stagnina (Buch.-Ham. ex Meisn.) Qaiser, as per images and details herein.
8 high res. images.
Yes, I think it is close to Persicaria stagnina (Buch.-Ham. ex Meisn.) Qaiser, as per images and details herein and as per POWO specimen- one and two and as per keys in Flora of Peninsular India.