An archaeophyte is a plant species which is non-native to a geographical region, but which was an introduced species in "ancient" times, rather than being a modern introduction. Those arriving after are called neophytes. [2]
The cut-off date is usually the beginning of the early modern period (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 arrived in the New World and the Columbian Exchange began.
Archaeophytes include numerous weed 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, which extirpated vast numbers of plant species. [3] [4] Central European archaeophytes almost all come from the Mediterranean region and the neighboring areas of Western Asia, as they were introduced into Central Europe with the beginning of agriculture and increasingly since Roman times. They therefore include many familiar plants such as cultivated apples, pears, plums, cereals such as wheat and barley as well as flowers and medicinal plants such as poppy, cornflower, real chamomile and corn.
Australia's collision with the Eurasian Plate led to additional South-east Asian plants entering the Australian flora like the Lepidium and Chenopodioideae . [5] Moreover, Aboriginal Australian and New Guinean contact prior to rising sea levels that isolated Australia from New Guinea in the early Holocene may explain the presence of New Guinea domesticates such as taro ( Colocasia esculenta ) and bananas ( Musa acuminata ) 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. [6]
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, wheat, field poppy, flixweed, red valerian, ground elders, soapwort, small toadflax, good king henry and cornflower. [7]
Other examples include:
Eschscholzia californica, the California poppy, golden poppy, California sunlight or cup of gold, is a species of flowering plant in the family Papaveraceae, native to the United States and Mexico. It is cultivated as an ornamental plant flowering in summer, with showy cup-shaped flowers in brilliant shades of red, orange and yellow. It is also used as food or a garnish. It became the official state flower of California in 1903.
Sorghum or broomcorn is a genus of about 25 species of flowering plants in the grass family (Poaceae). Sorghum bicolor is grown as a cereal for human consumption and as animal fodder.
Acer pseudoplatanus, known as the sycamore in the British Isles and as the sycamore maple in the United States, is a species of maple native to Central Europe and Western Asia. It is a large deciduous, broad-leaved tree, tolerant of wind and coastal exposure.
Centaurea cyanus, commonly known as cornflower or bachelor's button, is an annual flowering plant in the family Asteraceae native to Europe. In the past, it often grew as a weed in cornfields, hence its name. It is now endangered in its native habitat by agricultural intensification, particularly by over-use of herbicides. However, Centaurea cyanus is now also naturalised in many other parts of the world, including North America and parts of Australia through introduction as an ornamental plant in gardens and as a seed contaminant in crop seeds.
A wildflower is a flower that grows in the wild, meaning it was not intentionally seeded or planted. The term implies that the plant is neither a hybrid nor a selected cultivar that is any different from the native plant, even if it is growing where it would not naturally be found. The term can refer to the whole plant, even when not in bloom, and not just the flower.
Grevillea, commonly known as spider flowers, is a genus of about 360 species of evergreen flowering plants in the family Proteaceae. Plants in the genus Grevillea are shrubs, rarely trees, with the leaves arranged alternately along the branches, the flowers zygomorphic, arranged in racemes at the ends of branchlets, and the fruit a follicle that splits down one side only, releasing one or two seeds.
Hyacinthoides hispanica, the Spanish bluebell or wood hyacinth, is a spring-flowering bulbous perennial native to the Iberian Peninsula. It is one of around a dozen species in the genus Hyacinthoides, others including the common bluebell in northwestern Europe, and the Italian bluebell further east in the Mediterranean region.
A synanthrope is an organism that lives near and benefits from humans and their environmental modifications. The term synanthrope includes many species regarded as pests or weeds, but does not include domesticated animals. Common synanthrope habitats include houses, gardens, farms, parks, roadsides and rubbish dumps.
Capsella bursa-pastoris, known as shepherd's purse because of its triangular flat fruits, which are purse-like, is a small annual and ruderal flowering plant in the mustard family (Brassicaceae). It is native to eastern Europe and Asia minor, but is naturalized and considered a common weed in many parts of the world, especially in colder climates, including the British Isles, where it is regarded as an archaeophyte, North America and China, but also in the Mediterranean and North Africa. C. bursa-pastoris is the second-most prolific wild plant in the world, and is common on cultivated ground and waysides and meadows.
Allium ampeloprasum is a member of the onion genus Allium. The wild plant is commonly known as wild leek or broadleaf wild leek. Its native range is southern Europe to southwestern Asia and North Africa, but it is cultivated in many other places and has become naturalized in many countries.
The genus Tacca, which includes the batflowers and arrowroot, consists of flowering plants in the order Dioscoreales, native to tropical regions of South America, Africa, Australia, Southeast Asia, and various Oceanic islands. In older texts, the genus was treated in its own family Taccaceae, but the 2003 APG II system incorporates it into the family Dioscoreaceae. The APG III and APG IV systems continue to include Tacca in Dioscoreaceae.
Lathyrus aphaca, known as the yellow pea or yellow vetchling, is an annual species in the family Fabaceae with yellow flowers and solitary, pea-like fruits. It originated in the Middle East and has spread throughout Europe and beyond as a weed of cultivated fields and roadsides. The fruits are eaten as a supplement to diets in some parts of South Asia but are narcotic and potentially toxic in large quantities.
Roemeria argemone is a species of flowering plant in the poppy family Papaveraceae. Its common names include long pricklyhead poppy, prickly poppy and pale poppy. Its native range includes parts of Eurasia and North Africa, but it can be found growing wild in parts of North America, where it is an introduced species. It is cultivated as an ornamental plant.
Murraya paniculata, commonly known as orange jasmine, orange jessamine, china box or mock orange, is a species of shrub or small tree in the family Rutaceae and is native to South Asia, Southeast Asia and Australia. It has smooth bark, pinnate leaves with up to seven egg-shaped to elliptical leaflets, fragrant white or cream-coloured flowers and oval, orange-red berries containing hairy seeds.
Cupaniopsis anacardioides, commonly known as tuckeroo, cashew-leaf cupania, carrotwood, beach tamarind or green-leaved tamarind, is a species of flowering plant in the family, Sapindaceae, and is native to eastern and northern Australia. It is a tree with paripinnate leaves with 4 to 8 egg-shaped leaflets with the narrower end towards the base, or elliptic leaves, and separate male and female flowers arranged in panicles, the fruit a more or less spherical golden yellow capsule.
In botany, a neophyte is a plant species which is not native to a geographical region and was introduced in recent history. Non-native plants that are long-established in an area are called archaeophytes. In Britain, neophytes are defined more specifically as plant species that were introduced after 1492, when Christopher Columbus arrived in the New World and the Columbian Exchange began.
Setaria palmifolia is a species of grass known by the common names palmgrass, highland pitpit, hailans pitpit, short pitpit, broadleaved bristlegrass, and knotroot. It is native to temperate and tropical Asia. It is known elsewhere as an introduced, and often invasive, species, including in Australia, New Zealand, many Pacific Islands, and the Americas.
An escaped plant is a cultivated plant that has escaped from agriculture, forestry or garden cultivation and has become naturalized in the wild. Usually not native to an area, escaped plants may become invasive. Therefore, escaped plants are the subject of research in invasion biology.
Hemerochory, or anthropochory, is the distribution of cultivated plants or their seeds and cuttings, consciously or unconsciously, by humans into an area that they could not colonize through their natural mechanisms of spread, but are able to maintain themselves without specific human help in their new habitat.
Adventive plants or adventitious plants are plants that have established themselves in a place that does not correspond to their area of origin due to anthropogenic influence and, therefore, are all wild species that have only been established with the help of humans, in contrast to the native species.