Polygonum aviculare

Polygonum aviculare L., Sp. Pl. 362 1753. (Syn: Avicularia vulgaris Didr.; Centinodium axillare Montandon; Polygonum aequale subsp. oedocarpum Lindm.; Polygonum agreste SUMNER; Polygonum aphyllum Krock.; Polygonum araraticum Kom.; Polygonum aviculare var. angustissimum Meisn. ……; Polygonum berteroi Phil.; Polygonum centinodum Lam.; Polygonum erectum Roth; Polygonum ganderbalense Munshi & Javeid; Polygonum heterophyllum Lindm. ……; Polygonum monspeliense Thiéb.-Bern. ex Pers.; Polygonum neglectum Besser; Polygonum planum Skvortsov; Polygonum polyneuron Franch. & Sav.; Polygonum procumbens Gilib. [Invalid]; Polygonum prostratum Skvortsov; Polygonum retinerve Vorosch.; Polygonum rubescens Small; Polygonum scythicum Klokov; Polygonum striatum K. Koch; Polygonum uruguense H. Gross);

Temp. Northern Hemisphere, Macaronesia to Eritrea: Afghanistan, Alabama, Alaska, Albania, Alberta, Algeria, Altay, Amur, Arizona, Arkansas, Austria, Azores, Baleares, Baltic States, Belarus, Belgium, British Columbia, Bulgaria, Buryatiya, California, Canary Is., Central European Rus, China North-Central, China South-Central, China Southeast, Chita, Colorado, Connecticut, Corse, Costa Rica, Cyprus, Czechoslovakia, Delaware, Denmark, District of Columbia, East Aegean Is., East European Russia, East Himalaya, Egypt, Eritrea, Ethiopia, Finland, Florida, France, Føroyar, Georgia, Germany, Great Britain, Greece, Hainan, Hungary, Iceland, Idaho, Illinois, Indiana, Inner Mongolia, Iowa, Iran, Iraq, Ireland, Irkutsk, Italy, Kamchatka, Kansas, Kazakhstan, Kentucky, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Kriti, Krym, Kuril Is., Labrador, Lebanon-Syria, Libya, Louisiana, Madeira, Magadan, Maine, Manchuria, Manitoba, Maryland, Michigan, Minnesota, Mississippi, Missouri, Montana, Morocco, Myanmar, Nebraska, Nepal, Netherlands, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Caucasus, North Dakota, North European Russi, Northwest European R, Northwest Territorie, Norway, Nova Scotia, Ohio, Oklahoma, Ontario, Oregon, Pakistan, Palestine, Pennsylvania, Poland, Portugal, Primorye, Qinghai, Québec, Rhode I., Romania, Sakhalin, Sardegna, Saskatchewan, Saudi Arabia, Sicilia, South Carolina, South Dakota, South European Russi, Spain, Sweden, Switzerland, Tadzhikistan, Taiwan, Tennessee, Texas, Tibet, Transcaucasus, Tunisia, Turkey, Turkey-in-Europe, Turkmenistan, Ukraine, Utah, Uzbekistan, Vermont, Virginia, Washington, West Himalaya, West Siberia, West Virginia, Wisconsin, Wyoming, Xinjiang, Yakutskiya, Yemen, Yugoslavia, Yukon; Introduced into: Angola, Argentina Northeast, Argentina Northwest, Argentina South, Bolivia, Brazil South, Brazil Southeast, Cape Provinces, Chad, Chile Central, Chile North, Chile South, Colombia, Ecuador, Falkland Is., Free State, Guatemala, Hawaii, Juan Fernández Is., Kenya, KwaZulu-Natal, Lesotho, Massachusetts, Mexico Central, Mexico Northeast, Mexico Northwest, Namibia, New Zealand North, Newfoundland, Northern Provinces, Paraguay, Prince Edward I., Svalbard, Tristan da Cunha, Uruguay, Zimbabwe as per POWO;
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Common name: Common Knotgrass, Birdweed, Pigweed, Lowgrass, Prostrate Knotweed • Hindi: Bannalia, Bigbund, Bijband, Endrani, Hisonali, Hunraj, Kuwar, Machoti, Nisomali • Sanskrit: Miromati, Nisomali • Urdu: Beekh-e Anjbar بیخ انجبار
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ID request- Ladakh plant–231011-PKA3:
Seen this prostrate herb at “Zinzingbar”. looks like some Polygonaceae sp.?
Date/Time: 12-09-2011 / 10:45AM
Location: Zinzingbar, (Manali- Leh Route), Lahul- Spiti, Himachal Pradesh
Altitude: Approx: 14100ft.
Habitat: Wild
Plant habit: Herb
Flowers small in size, approx 2 to 4mm.

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Yes…This plant looks like P. aviculare to me too.
In P. plebeium, ochrea is more lacerate and the tepal is more angular.
Pl have a look on the following link:
http://www.flickr.com/photos/dinesh_valke/lightbox/

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Polygonaceae Fortnight: Polygonum aviculare at Zinzingbar -PKA16 : 2 posts by 2 authors. Attachments (4).

Seen this prostrate herb at “Zinzingbar”.
Bot. name: Polygonum aviculare
Family:Polygonaceae
Date/Time: 12-09-2011 / 10:45AM
Location: Zinzingbar, (Manali- Leh Route), Lahul- Spiti, Himachal Pradesh
Altitude: Approx: 14100ft.
Habitat: Wild
Plant habit: Herb
Flowers small in size, approx 2 to 4mm.

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Polygonaceae Fortnight: Polygonum ariculare from Kashmir-GSMAY54 : 3 posts by 3 authors. Attachments (3).

Polygonaceae Fortnight: Polygonum sp. from Kashmir for ID-GSMAY56 : 2 posts by 2 authors. Attachments (3).

Plant looks different from both Polygonum arenastrum and P. aviculare, please identify.
Photographed from Srinagar, Kashmir

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I think P. aviculare

… has identified it as Polygonum aviculare subsp. heterophyllum

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References:
POWO