''Echium plantagineum'', commonly known as purple viper's-bugloss or Patterson's curse, is a species of the genus ''

Echium ''Echium'' is a genus of approximately 70 species and several subspecies of flowering plant in the family Boraginaceae. Species of ''Echium'' are native to North Africa, mainland Europe to Central Asia, and the Macaronesian islands where ...

'' native to western and southern

Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...

(from southern

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe ...

south to

Iberia The Iberian Peninsula (), ** * Aragonese language, Aragonese and Occitan language, Occitan: ''Peninsula Iberica'' ** ** * french: Péninsule Ibérique * mwl, Península Eibérica * eu, Iberiar penintsula also known as Iberia, is a pe ...

and east to the

Crimea Crimea, crh, Къырым, Qırım, grc, Κιμμερία / Ταυρική, translit=Kimmería / Taurikḗ ( ) is a peninsula in Ukraine, on the northern coast of the Black Sea, that has been occupied by Russia since 2014. It has a p ...

), northern

Africa Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area ...

, and southwestern

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an are ...

(east to

Georgia Georgia most commonly refers to: * Georgia (country), a country in the Caucasus region of Eurasia * Georgia (U.S. state), a state in the Southeast United States Georgia may also refer to: Places Historical states and entities * Related to the ...

).''Echium plantagineum''.
''Flora Europaea''. It has also been introduced to

Australia Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. With an area of , Australia is the largest country by ...

South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring coun ...

and

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country Continental United States, primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., ...

, where it is an invasive weed. Due to a high concentration of

pyrrolizidine alkaloid Pyrrolizidine alkaloids (PAs), sometimes referred to as necine bases, are a group of naturally occurring alkaloids based on the structure of pyrrolizidine. Pyrrolizidine alkaloids are produced by plants as a defense mechanism against insect he ...

s, it is

poisonous Poison is a chemical substance that has a detrimental effect to life. The term is used in a wide range of scientific fields and industries, where it is often specifically defined. It may also be applied colloquially or figuratively, with a broa ...

to grazing livestock, especially those with very simple digestive systems, like horses.

Description

''Echium plantagineum'' is a winter annual plant growing to 20–60cm tall, with rough, hairy, lanceolate

leaves A leaf ( : leaves) is any of the principal appendages of a vascular plant stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, st ...

up to 14 cm long. The

flower A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). The biological function of a flower is to facilitate reproduction, usually by providing a mechanis ...

s are purple, 15–20 mm long, with all the

stamen The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the fila ...

s protruding, and borne on a branched spike.Blamey, M. & C. Grey-Wilson. ''Flora of Britain and Northern Europe''. 1989. Piggin, C. M. & A. W. Sheppard. (1995). ''Echium plantagineum'' L. In: Groves, R. H., R. C. H. Shepherd, and R. G. Richardson, (eds.) ''The Biology of Australian Weeds'' Vol 1. R. G. and F. J. Richardson, Melbourne. pp 87-110.

Taxonomy

The Latin genus name comes from the Greek word 'ekhis' which means viper (a type of snake). Some sources say that this is due to the seeds resembling a viper's head. Others claim that the forking at the end of the thin flower style resembles a viper's tongue. It is also claimed that the plant roots when eaten with

wine Wine is an alcoholic drink typically made from Fermentation in winemaking, fermented grapes. Yeast in winemaking, Yeast consumes the sugar in the grapes and converts it to ethanol and carbon dioxide, releasing heat in the process. Different ...

could provide a folk cure for a snake bite. The Latin

specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bo ...

''plantagineum'' then refers to the leaves of the plant which are similar to those of a

plantain Plantain may refer to: Plants and fruits * Cooking banana, banana cultivars in the genus ''Musa'' whose fruits are generally used in cooking ** True plantains, a group of cultivars of the genus ''Musa'' * ''Plantaginaceae'', a family of flowerin ...

.W. T. Parsons, William Thomas Parsons and E. G. Cuthbertson

Invasive species

''Echnium plantagineum'' has become an

invasive species in Australia Invasive species in Australia are a serious threat to the native biodiversity Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic ('' genetic variabi ...

, where it is also known as Salvation Jane (particularly in

South Australia South Australia (commonly abbreviated as SA) is a States and territories of Australia, state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest o ...

), blueweed, Lady Campbell weed, Paterson's Curse and Riverina bluebell.Lewis Kahn and David Cottle (editors) In the

, the species has become naturalised in parts of

California California is a state in the Western United States, located along the Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the most populous U.S. state and the 3rd largest by area. It is also the m ...

Oregon Oregon () is a U.S. state, state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington (state), Washington, while the Snake River delineates much of it ...

, and some eastern states and areas such as northern

Michigan Michigan () is a state in the Great Lakes region of the upper Midwestern United States. With a population of nearly 10.12 million and an area of nearly , Michigan is the 10th-largest state by population, the 11th-largest by area, and t ...

. In Oregon it has been declared a

noxious weed A noxious weed, harmful weed or injurious weed is a weed that has been designated by an agricultural or other governing authority as a plant that is injurious to agricultural or horticultural crops, natural habitats or ecosystems, or humans or li ...

Toxicity

''Echium plantagineum'' contains

s and is poisonous. The MERCK Veterinary Manual, Table 5
When eaten in large quantities, it causes reduced livestock weight, and death in severe cases, due to

liver The liver is a major organ only found in vertebrates which performs many essential biological functions such as detoxification of the organism, and the synthesis of proteins and biochemicals necessary for digestion and growth. In humans, it i ...

damage. Paterson's curse can also kill horses,Patersons Curse and Horse Health
/ref> and irritate the udders of dairy cows and the skin of humans. After the

2003 Canberra bushfires The 2003 Canberra bushfires caused severe damage to the suburbs and outer areas of Canberra, the capital city of Australia, during 18–22 January 2003. Almost 70% of the Australian Capital Territory's (ACT) pastures, pine plantations, and nat ...

, a large bloom of the plant occurred on the burned land, and many horses became ill and died from grazing on it.Paterson's curse poisoning in horses.
''Animal Health Surveillance Quarterly Report'' 8(4) Oct-Dec 2003. Because the alkaloids can also be found in the nectar of Paterson's curse, the

honey Honey is a sweet and viscous substance made by several bees, the best-known of which are honey bees. Honey is made and stored to nourish bee colonies. Bees produce honey by gathering and then refining the sugary secretions of plants (primar ...

made from it should be blended with other honeys to dilute the toxins.

References

External links

* * {{Taxonbar, from=Q159280 plantagineum Flora of Africa Flora of Asia Flora of Europe Taxa named by Carl Linnaeus