Rumex pseudonatronatus

{{Short description|Species of flowering plant}}

{{speciesbox

|image = Finnskräppa-3964 - Flickr - Ragnhild & Neil Crawford.jpg

|genus = Rumex

|species = pseudonatronatus

|authority = (Borbás) Borbás ex Murb.

|synonyms = *Rumex domesticus var. pseudonatronatus Borbás

• Rumex fennicus (Murb.) Murb.
• Rumex pseudonatronatus subsp. fennicus Murb.

|synonyms_ref = [http://www.tropicos.org/Name/26001571 Tropicos][http://www.theplantlist.org/tpl1.1/record/kew-2424835 The Plant List]

}}

Rumex pseudonatronatus, common name field dock{{PLANTS|id=RUPS|taxon=Rumex pseudonatronatus|accessdate=26 October 2015}} or Finnish dock, is a plant species native to northern Europe and northern Asia, known from Asiatic and European Russia, China, Mongolia, Kazakhstan, Kyrgyzstan, Finland, Norway, Sweden, Belgium, Netherlands, Estonia, Latvia, Lithuania, Poland, Belarus, etc. It is naturalized in much of Canada and to the north-central United States. It is known from every Canadian province from Québec to British Columbia, plus Yukon, North Dakota, South Dakota and Minnesota. It grows in wet and/ore disturbed sites along stream banks, lake shores, roadsides, ditches, cultivated fields, meadows, etc.[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242345768 Flora of North America v 5]Canada Weed Committee. 1969. Common and botanical names of weeds in Canada 1–67.[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=242345768 Flora of China v 5 p 336][https://translate.google.com/translate?hl=en&sl=lv&u=http://www.latvijasdaba.lv/augi/rumex-pseudonatronatus-borbas-borbas-ex-murb/&prev=/search?q%3DRumex%2Bpseudonatronatus%26start%3D10%26client%3Dfirefox-a%26sa%3DN%26rls%3Dorg.mozilla:en-US:official%26channel%3Dsb%26biw%3D1012%26bih%3D600 Finnish dock, Sugu Latvijas Daba]

Rumex pseudonatronatus is a perennial herb. Stems are erect, up to 150 cm tall, often branching above the middle. Leaves are lanceolate, up to 30 cm long. The inflorescence typically takes up the upper half of the shoot, the flowers green, pink or red, in whorls of up to 30 flowers. Achenes are reddish-brown, up to 3 mm long.Murbeck, Svante Samuel. 1899. Botaniska Notiser 1899: 16.Borbás, Vincze. 1880. Ertek, Term. Koreb. Mag. Tud. Acad. 11(18): 21.