Knorringia sibirica subsp. thomsonii

Knorringia sibirica subsp. thomsonii (Meisn. ex Steward) S. P. Hong in Nord. J. Bot. 9: 354. 1989; (Fig.9, B-E). (Syn: Polygonum sibiricum Laxm. var. thomsonii Meisn. ex Steward;. Polygonum sibiricum Laxm. subsp. thomsonii (Meisn. ex Steward) Rech.f. & Schiman-Czeika; Polygonum pamiricum Korsh.; Aconogonum pamiricum (Korsh.) Hara; Knorringia pamarica (Korsh.) Tzvelev)  as per Flora of Pakistan  
 



 
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ID request-051011-PKA1: Kindly help me with the ID.
Seen this plant near Village "Puga", Ladakh.
Date/Time: 14-09-2011 / 09:30AM
Location: Near Puga Village, Ladakh (Altitude: Approx: 15000ft)
Habitat: Wild (on the Rock)
Plant Habit: Herb

I hope Polygonum sp.
Thanks for giving me the lead.
I think, this herb could be Knorringia sibirica subsp. thomsonii (Polygonum sibiricum Laxm. var. thomsonii).
Kindly have a look at following link:
I had seen this herb near Village "Puga", Ladakh. (Altitude: Approx: 15000ft)
Habitat: Wild (on the sandy soil Rock).
Bot. name: Knorringia sibirica subsp. thomsonii
(Syn:
Polygonum sibiricum Laxm. var. thomsonii).
Family: Polygonaceae.

This is really a great finding ...! 
Surely Knorringia sibirica but not sure if subsp. thomsonii really exists. I am also searching relevant literature on this plant. 
The Plant List (TPL) mentions K. sibirica subsp. thomsonii as a synonym of Polygonum sibiricum var. thomosonii Meisn. But the molecular studies carried out on Polygonum s.l., the genus Knorringia did not group within the Polygonum/ Persicaria clade, supporting a distinct status to this genus. Hopefully more studies would be carried out on this genus and in future TPL would consider upgrading their database.
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Polygonum sibiricum var. thomsonii at Pangong lake, Ladakh- July-PKA-10 : 4 posts by 4 authors. Attachments (4)
Polygonum sibiricum var. thomsonii (Family: Polygonaceae).
Location: near Pangong lake, Ladakh
Altitude: Approx 14200ft

Very striking species. Quite different from other Polygonum species seen here in Uttarakhand.

   
 
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