''Viola lutea'', the mountain pansy, is a species of

violet Violet may refer to: Common meanings * Violet (color), a spectral color with wavelengths shorter than blue * One of a list of plants known as violet, particularly: ** ''Viola'' (plant), a genus of flowering plants Places United States * Viol ...

that grows in Europe, from the

British Isles The British Isles are a group of islands in the North Atlantic Ocean off the north-western coast of continental Europe, consisting of the islands of Great Britain, Ireland, the Isle of Man, the Inner and Outer Hebrides, the Northern Isles, ...

to the

Balkans The Balkans ( ), also known as the Balkan Peninsula, is a geographical area in southeastern Europe with various geographical and historical definitions. The region takes its name from the Balkan Mountains that stretch throughout the who ...

Description

''Viola lutea'' grows to a height of around . Its flowers are in diameter, and are typically yellow, although some individuals may have blue, purple or blotched flowers instead.

Taxonomy

''Viola lutea'' was first described by William Hudson in his 1762 '' Flora Anglica''. ''V. lutea'' subsp. ''lutea'' is native to central and north-western Europe, from the

Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...

; another

subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...

occurs further east, from

Hungary Hungary ( hu, Magyarország ) is a landlocked country in Central Europe. Spanning of the Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the south, Croatia a ...

to the

. Two very special subspecies are ''V. lutea'' subsp. ''calaminaria'' which occurs in the southernmost

Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...

and eastern

Belgium Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to th ...

, and ''V. lutea'' subsp. ''westfalica'', which only occurs at an extremely small locality near in

East Westphalia Ostwestfalen-Lippe (, literally ''East(ern) Westphalia-Lippe'', abbreviation OWL) is the eastern region of the German state of North Rhine-Westphalia, congruent with the administrative region of Detmold and containing the eastern part of Westp ...

, Germany. Both taxa have relatively recently evolved to take advantage of the local pollution left over after centuries of mining for metals in these locations. The subspecies ''calaminaria'' grows in areas where the mine

tailings In mining, tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction (gangue) of an ore. Tailings are different to overburden, which is the waste rock or other material that overlie ...

for

zinc Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodi ...

ore have been dumped, and the subspecies ''westfalica'' grows on heaps of

lead Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cu ...

ore waste. Both taxa have managed to become the dominant plant species in their extremely small

habitat In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical ...

Distribution

Within Great Britain, ''Viola lutea'' is found only in upland areas north of a line drawn between the

Severn , name_etymology = , image = SevernFromCastleCB.JPG , image_size = 288 , image_caption = The river seen from Shrewsbury Castle , map = RiverSevernMap.jpg , map_size = 288 , map_c ...

and

Humber The Humber is a large tidal estuary on the east coast of Northern England. It is formed at Trent Falls, Faxfleet, by the confluence of the tidal rivers Ouse and Trent. From there to the North Sea, it forms part of the boundary between th ...

estuaries; it ranges in altitude from in

Derbyshire Derbyshire ( ) is a ceremonial county in the East Midlands, England. It includes much of the Peak District National Park, the southern end of the Pennine range of hills and part of the National Forest. It borders Greater Manchester to the nor ...

to in Breadalbane. In Ireland, its distribution is more scattered geographically, and ranges vertically from

sea level Mean sea level (MSL, often shortened to sea level) is an average surface level of one or more among Earth's coastal bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical datuma standardised g ...

County Clare County Clare ( ga, Contae an Chláir) is a county in Ireland, in the Southern Region and the province of Munster, bordered on the west by the Atlantic Ocean. Clare County Council is the local authority. The county had a population of 118,817 ...

to in the

Wicklow Mountains The Wicklow Mountains (, archaic: ''Cualu'') form the largest continuous upland area in the Republic of Ireland. They occupy the whole centre of County Wicklow and stretch outside its borders into the counties of Dublin, Wexford and Carlow. Wh ...

Uses

''Viola lutea'' is the main progenitor for the common cultivated garden pansy, ''V.'' × ''wittrockiana''. This hybrid was created by gardeners in Britain in the early 19th century.

References

External links

* * {{Taxonbar, from=Q164447 lutea Flora of Europe Plants described in 1762