An archaeophyte is a

plant Plants are the eukaryotes that form the Kingdom (biology), kingdom Plantae; they are predominantly Photosynthesis, photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with c ...

species which is non-native to a geographical region, but which was an

introduced species An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived ther ...

in "ancient" times, rather than being a modern introduction. Those arriving after are called neophytes. The cut-off date is usually the beginning of the

early modern period The early modern period is a Periodization, historical period that is defined either as part of or as immediately preceding the modern period, with divisions based primarily on the history of Europe and the broader concept of modernity. There i ...

(turn of the 15th or 16th century). In Britain, archaeophytes are considered to be those species first introduced prior to the year 1492, when

Christopher Columbus Christopher Columbus (; between 25 August and 31 October 1451 – 20 May 1506) was an Italians, Italian explorer and navigator from the Republic of Genoa who completed Voyages of Christopher Columbus, four Spanish-based voyages across the At ...

arrived in the

New World The term "New World" is used to describe the majority of lands of Earth's Western Hemisphere, particularly the Americas, and sometimes Oceania."America." ''The Oxford Companion to the English Language'' (). McArthur, Tom, ed., 1992. New York: ...

and the

Columbian Exchange The Columbian exchange, also known as the Columbian interchange, was the widespread transfer of plants, animals, and diseases between the New World (the Americas) in the Western Hemisphere, and the Old World (Afro-Eurasia) in the Eastern Hemis ...

began.

Background

Archaeophytes include numerous

weed A weed is a plant considered undesirable in a particular situation, growing where it conflicts with human preferences, needs, or goals.Harlan, J. R., & deWet, J. M. (1965). Some thoughts about weeds. ''Economic botany'', ''19''(1), 16-24. Pla ...

species the seeds of which have been found in archaeological excavations – to which they had been brought by people ( anthropochory), animals ( zoochory) or the wind ( anemochory). In some cases, introduced species, whether archaeophytes or neophytes, may have been native species before the

ice ages An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages, and Gre ...

, which extirpated vast numbers of plant species. Central European archaeophytes almost all come from the Mediterranean region and the neighboring areas of

Western Asia West Asia (also called Western Asia or Southwest Asia) is the westernmost region of Asia. As defined by most academics, UN bodies and other institutions, the subregion consists of Anatolia, the Arabian Peninsula, Iran, Mesopotamia, the Armenian ...

, as they were introduced into

Central Europe Central Europe is a geographical region of Europe between Eastern Europe, Eastern, Southern Europe, Southern, Western Europe, Western and Northern Europe, Northern Europe. Central Europe is known for its cultural diversity; however, countries in ...

with the beginning of agriculture and increasingly since Roman times. They therefore include many familiar plants such as cultivated apples, pears, plums,

cereal A cereal is a grass cultivated for its edible grain. Cereals are the world's largest crops, and are therefore staple foods. They include rice, wheat, rye, oats, barley, millet, and maize ( Corn). Edible grains from other plant families, ...

s such as

wheat Wheat is a group of wild and crop domestication, domesticated Poaceae, grasses of the genus ''Triticum'' (). They are Agriculture, cultivated for their cereal grains, which are staple foods around the world. Well-known Taxonomy of wheat, whe ...

and

barley Barley (), a member of the grass family, is a major cereal grain grown in temperate climates globally. It was one of the first cultivated grains; it was domesticated in the Fertile Crescent around 9000 BC, giving it nonshattering spikele ...

as well as flowers and medicinal plants such as

poppy A poppy is a flowering plant in the subfamily Papaveroideae of the family Papaveraceae. Poppies are herbaceous plants, often grown for their colourful flowers. One species of poppy, '' Papaver somniferum'', is the source of the narcotic drug ...

, cornflower, real

chamomile Chamomile (American English) or camomile (British English; see spelling differences) ( or ) is the common name for several plants of the family Asteraceae. Two of the species, '' Matricaria chamomilla'' and '' Chamaemelum nobile'', are commo ...

and corn.

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

's collision with the Eurasian Plate led to additional

South-east Asia Southeast Asia is the geographical southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Australian mainland, which is part of Oceania. Southeast Asia i ...

n plants entering the Australian flora like the ''

Lepidium ''Lepidium'' is a genus of plants in the mustard/cabbage family, Brassicaceae. The genus is widely distributed in the Americas, Africa, Asia, Europe, and Australia.Chenopodioideae The Chenopodioideae are a subfamily of the flowering plant family Amaranthaceae in the APG III system, which is largely based on molecular phylogeny, but were included – together with other subfamilies – in the family Chenopodiaceae, or goose ...

''. Moreover,

Aboriginal Australian Aboriginal Australians are the various indigenous peoples of the Australian mainland and many of its islands, excluding the ethnically distinct people of the Torres Strait Islands. Humans first migrated to Australia 50,000 to 65,000 year ...

and New Guinean contact prior to rising sea levels that isolated Australia from

New Guinea New Guinea (; Hiri Motu: ''Niu Gini''; , fossilized , also known as Papua or historically ) is the List of islands by area, world's second-largest island, with an area of . Located in Melanesia in the southwestern Pacific Ocean, the island is ...

in the early Holocene may explain the presence of New Guinea domesticates such as taro (''

Colocasia esculenta Taro (; ''Colocasia esculenta'') is a root vegetable. It is the most widely cultivated species of several plants in the family Araceae that are used as vegetables for their corms, leaves, stems and Petiole (botany), petioles. Taro corms are a ...

'') and bananas (''

Musa acuminata ''Musa acuminata'' is a species of banana native to South Asia, Southern Asia, its range comprising the Indian subcontinent and Southeast Asia. Many of the modern edible dessert bananas are derived from this species, although some are hybrids wi ...

'') in northern Australia. Assisted migrations may also be the reason why some rainforest plants from New Guinea entered northern Australia more than 10,000 years ago.

Examples

Archaeophytes are often cultivated species, transported deliberately by humans, but are also often weeds of cultivation, spread accidentally with grain. Archaeophytes in the United Kingdom include

sweet chestnut The sweet chestnut (''Castanea sativa''), also known as the Spanish chestnut or European chestnut, is a species of tree in the family Fagaceae, native to Southern Europe and Asia Minor, and widely cultivated throughout the temperate world. A ...

, field poppy, flixweed, red valerian, ground elders, soapwort, small toadflax, good king henry and

cornflower ''Centaurea cyanus'', commonly known as cornflower or bachelor's button (among other names), is an annual flowering plant in the family Asteraceae native to Europe. In the past, it often grew as a weed in cornfields (in the broad sense of "co ...

.Botanical Journal of the Linnean Society - Archaeophytes in Britain
/ref> Other examples include: * '' Agrostemma githago'' * '' Avena fatua'' * '' Chenopodium polyspermum'' * '' Euphorbia helioscopia'' * '' Setaria viridis'' * '' Vicia hirsuta'' * '' Galium tricornutum''

References

{{Botany Botany Introduced plants

Background

Examples

See also

References