Polygonum rottboellioides var. tibetica (Hook. f.) R.R. Stewart, Annot. Cat. Vasc. Pl. West Pakistan Kashmir 210 1972. (Syn: Polygonum tubulosum var. tibetica Hook. f.);
N. Pakistan to SW. Tibet and W. Himalaya: Pakistan, Tibet, West Himalaya as per POWO;
Polygonaceae Fortnight: Polygonum tubulosum from Kashmir-GSMAY60 : 5 posts by 4 authors.
Polygonum tubulosum, photographed from Srinagar, Kashmir
This is perhaps himalyan copy of Polygonum pleibium…
Some earlier relevant feedback from an old thread:
“According to Tropicos and Fl. Pakistan, Polygonum tubulosum is a synonym of Polygonum rottboellioides. A scrutiny of the black and white photograph and illustration of P. rottboellioides provided in ‘The Polygonaceae of Kashmir Himalaya’ and in Fl. Pakistan respectively, I am assuming your plant to be Polygonum rottboellioides var. tibetica.
The only problem is the number of stamens as appearing in your photograph ‘b’ (as small dots) seems to be more than five. P.
Correct name would be Polygonum rottboellioides var. tibeticum (Hook. fil.) R. R. Stewart , as according to Catalogue of Life
Polygonum plebeium R.Br.