Lathyrus aphaca

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Lathyrus aphaca
Lathyrus aphaca var. aphaca1LEST.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Genus: Lathyrus
Species:
L. aphaca
Binomial name
Lathyrus aphaca
L.
Synonyms [1]
  • Orobus aphaca(L.) Doll

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.

Contents

Description

Lathyrus aphaca, known as the yellow pea or yellow vetchling, is an annual species in the family Fabaceae (formerly Leguminosae). Plants grow to about 100 cm tall, are pale green to glaucous, glabrous, and have angled but unwinged stems. The leaves are reduced to simple (unbranched) tendrils and what look like leaves are actually stipules, which are ovate-hastate in shape and up to 50 mm long. The flowers are usually solitary and yellow (often streaked with violet), 10–13 mm in length, and held on long (up to 50 mm) stalks branching from the leaf axils. The flowers, which are bisexual, have 10 stamens and 1 style. Lathyrus aphaca is diploid, with 14 chromosomes. [2] [3]

Distribution and habitat

It is believed to have evolved in the Middle East, around Syria and Jordan, along with other leguminous species which have a centre of diversity in that region. [4] [5] Edible species of pea were first cultivated in the Fertile Crescent, while weeds such as L. aphaca are believed to have adapted naturally to an arable or similar human-disturbed habitat between about 23,000 and 11,000 years ago. [6] Lathyrus aphaca itself has some advantages as a farmland weed, being able to fix nitrogen and thus help to fertilise the soil, as well as being edible in small quantities if present in the grain harvest, [7] although it is narcotic when consumed in larger amounts.

The native habitat of L. aphaca is most likely to be the dry, limestone scrubland in the Middle East sometimes known as phrygana or garrigue. In these countries it is found in both wild and cultivated habitats. [8] It can be an aggressive agricultural weed, infesting mainly wheat, [9] but also other crops, such as sugarcane in Pakistan. [10] The expansion of farming over the last 10,000 years allowed L. aphaca to increase its range to southern Asia, as far as Bangladesh, and southern Europe as far as Portugal and even the Azores. [11] In these regions it is often considered native, but it is more likely that it is an ancient introduction, or archaeophyte, which has found a natural or semi-natural analogue of its phrygana habitat, where it can persist in the wild. In Portugal it is considered native only in the Calcareous Western Centre biome, [12] despite being present throughout the country as an agricultural weed. It is more likely that it is a well-established archaeophyte there.

In northern Europe, L. aphaca has not generally found any semi-natural analogue of its native arid scrub habitat. In Poland it is described as occurring ‘in a different type of habitats, e.g. in the vegetation of forest edges representing the Trifolio-Geranietea sanguinei class, on dry lawns, transport route edges (especially along railway lines), in orchards, arable fields and fallows.' [13] Since the early 20th century, it has gone into decline throughout Europe due to improved seed cleaning techniques, and it has largely been eradicated from cereal crops. In the Netherlands, it has declined by 75-100% since 1950, [14] and in Germany and Poland there is a similar story. Meanwhile, however, it has become established as an agricultural weed further afield, in the United States, South Africa and Australia (GBIF, 2021). [15]

In the United Kingdom

Sward of Lathyrus aphaca at Swanscombe Lathyrus aphaca and Vicia villosa sward.jpg
Sward of Lathyrus aphaca at Swanscombe

In Britain, L. aphaca has been recorded since 1632, [16] when it was found by Thomas Johnson ‘near Gravesend.’ This is sufficiently early to earn it a place as either a native or a long-naturalised arable weed (archaeophyte), as opposed to a recent introduction neophyte. In the absence of any further information, therefore, British authors are free to describe it as a native or an introduced plant as they choose. A semi-natural habitat suggests that it is native, whereas an arable field says ‘archaeophyte’. Roadsides are difficult to interpret, and there are many weeds of roadsides which are considered native in various regions across Britain despite the obvious route of introduction. This uncertainty is nicely summed up by Rumsey, [17] who writes ‘[it] may be a long-established introduction rather than a native species… and may have been introduced as a seed contaminant of leguminous crops.’ It is, however, usually treated as native and it is classified as VU (Vulnerable) in the Red List. [18]

In 2021 Natural England designated Swanscombe Peninsula in Kent a Site of Special Scientific Interest, partly for its population of yellow vetchling. [19]

Related Research Articles

<i>Lathyrus</i> Plant genus in the pea family Fabaceae

Lathyrus is a genus of flowering plants in the legume family Fabaceae, and contains approximately 160 species. Commonly known as peavines or vetchlings, they are native to temperate areas, with a breakdown of 52 species in Europe, 30 species in North America, 78 in Asia, 24 in tropical East Africa, and 24 in temperate South America. There are annual and perennial species which may be climbing or bushy. This genus has numerous sections, including Orobus, which was once a separate genus. The genus has numerous synonyms, including Pisum, the ancient Latin name for the pea.

<span class="mw-page-title-main">Cover crop</span> Crop planted to manage erosion and soil quality

In agriculture, cover crops are plants that are planted to cover the soil rather than for the purpose of being harvested. Cover crops manage soil erosion, soil fertility, soil quality, water, weeds, pests, diseases, biodiversity and wildlife in an agroecosystem—an ecological system managed and shaped by humans. Cover crops can increase microbial activity in the soil, which has a positive effect on nitrogen availability, nitrogen uptake in target crops, and crop yields. Cover crops may be an off-season crop planted after harvesting the cash crop. Cover crops are nurse crops in that they increase the survival of the main crop being harvested, and are often grown over the winter. In the United States, cover cropping may cost as much as $35 per acre.

<span class="mw-page-title-main">Polyculture</span> Growing multiple crops together in agriculture

In agriculture, polyculture is the practice of growing more than one crop species together, in contrast to monoculture, which had become the dominant approach in the 20th century. Traditional examples include the intercropping of the three sisters, namely maize, beans, and squash, by indigenous peoples of Central and North America, and the rice-fish systems of Asia. Polyculture serves multiple functions in the ecology of agriculture, including controlling insect pests, plant diseases, and weeds. Polyculture can contribute to sustainable agriculture as unlike monoculture it does not rely on pesticides, requires less tillage, increases local biodiversity, and where legumes are involved, help to maintain soil nitrogen.

<i>Vicia cracca</i> Species of legume

Vicia cracca, is a species of flowering plant in the pea and bean family Fabaceae. It is native to Europe and Asia. It occurs on other continents as an introduced species, including North America, where it is a common weed. It often occurs in disturbed habitats, including old fields and roadside ditches.

<i>Lathyrus sativus</i> Species of plant in the pea family

Lathyrus sativus, also known as grass pea, cicerchia, blue sweet pea, chickling pea, chickling vetch, Indian pea, white pea and white vetch, is a legume commonly grown for human consumption and livestock feed in Asia and East Africa. It is a particularly important crop in areas that are prone to drought and famine, and is thought of as an 'insurance crop' as it produces reliable yields when all other crops fail. The seeds contain a neurotoxin that causes lathyrism, a neurodegenerative disease, if eaten as a primary protein source for a prolonged period.

<i>Fallopia convolvulus</i> Species of flowering plant in the knotweed family Polygonaceae

Fallopia convolvulus, the black-bindweed or wild buckwheat, is a fast-growing annual flowering plant in the family Polygonaceae native throughout Europe, Asia and northern Africa.

<i>Lathyrus pratensis</i> Species of legume

Lathyrus pratensis or meadow vetchling, yellow pea, meadow pea and meadow pea-vine, is a perennial legume that grows to 1.2 m in height.

<i>Vicia</i> Genus of flowering plants in the bean family Fabaceae

Vicia is a genus of over 240 species of flowering plants that are part of the legume family (Fabaceae), and which are commonly known as vetches. Member species are native to Europe, North America, South America, Asia and Africa. Some other genera of their subfamily Faboideae also have names containing "vetch", for example the vetchlings (Lathyrus) or the milk-vetches (Astragalus). The lentils are included in genus Vicia, and were formerly classified in genus Lens. The broad bean is sometimes separated in a monotypic genus Faba; although not often used today, it is of historical importance in plant taxonomy as the namesake of the order Fabales, the Fabaceae and the Faboideae. The tribe Vicieae in which the vetches are placed is named after the genus' current name. The true peas (Pisum) are among the closest living relatives of vetches.

<i>Lathyrus tuberosus</i> Species of legume

Lathyrus tuberosus is a small, climbing perennial plant, native in moist temperate parts of Europe and Western Asia. The plant is a trailer or weak climber, supported by tendrils, growing to 1.2 m tall. The leaves are pinnate, with two leaflets and a branched twining tendril at the apex of the petiole. Its flowers are hermaphroditic, pollinated by bees. The plants can also spread vegetatively from the root system.

<i>Vicia sepium</i> Species of legume

Vicia sepium or bush vetch is a species of flowering plant in the pea and bean family Fabaceae. A nitrogen-fixing, perennial, leguminous climbing plant that grows in hedgerows, grasslands, the edges of woodland, roadsides and rough ground. It occurs in western Europe, Crimea of Ukraine, Russia including Siberia, Caucasus and Central Asia. It can also be found in eastern Canada, north-eastern states of the USA and, where suitable habitat occurs, in Greenland. It is native to, and has been recorded in, almost all parts of Britain, Ireland and associated islands.

<i>Lathyrus nissolia</i> Species of legume

Lathyrus nissolia, the grass vetchling or grass pea, is a species of flowering plant in the pea and bean family Fabaceae. It is native to most of Europe, Maghreb, Levant and the Caucasus. Despite its common names, it is not a grass, but belongs to the legume family Fabaceae.

<i>Lathyrus cicera</i> Species of legume

Lathyrus cicera is a species of wild pea known by the common names red pea, red vetchling and flatpod peavine. It is native to Europe, North Africa, and the Middle East, and it is known from other places as an introduced species. This is a hairless annual herb producing a slightly winged stem. The leaves are each made up of two leaflike linear leaflets 3 to 6 centimeters long. They also bear branched, curling tendrils. The inflorescence holds a single pea flower 1 to 1.5 centimeters wide which is a varying shade of red. The fruit is a hairless dehiscent legume pod.

<i>Lathyrus hirsutus</i> Species of plant

Lathyrus hirsutus is a species of wild pea known by several common names, including Caley pea, singletary pea, hairy vetchling, and Austrian winter pea. It is native to Europe, North Africa, and much of Asia, and it is known from other continents, including North America, as an introduced species. This is an annual herb producing a winged stem and leaves each made up of two leaflike leaflets with a branching, coiled tendril. The inflorescence holds one or two pink, blue, or bicolored pea flowers each 1 to 1.5 centimeters wide. The fruit is a dehiscent legume pod covered in hairs with each hair growing from a minute bulbous base. The rest of the plant is generally hairless.

<span class="mw-page-title-main">Weed</span> Plant considered undesirable in a particular place or situation

A weed is a plant considered undesirable in a particular situation, growing where it conflicts with human preferences, needs, or goals. Plants with characteristics that make them hazardous, aesthetically unappealing, difficult to control in managed environments, or otherwise unwanted in farm land, orchards, gardens, lawns, parks, recreational spaces, residential and industrial areas, may all be considered weeds. The concept of weeds is particularly significant in agriculture, where the presence of weeds in fields used to grow crops may cause major losses in yields. Invasive species, plants introduced to an environment where their presence negatively impacts the overall functioning and biodiversity of the ecosystem, may also sometimes be considered weeds.

<i>Lathyrus sphaericus</i> Species of legume

Lathyrus sphaericus is a species of wild pea known by the common names grass pea and round-seeded vetchling. It is native to Eurasia and much of Africa, and it is known on other continents as an introduced species. It can grow in many types of habitat, including disturbed areas. This is an annual herb producing a slender stem and bearing leaves each made up of two long, narrow, grasslike leaflets up to 6 centimeters long and a coiling, climbing tendril. The inflorescence is made up of one pea flower on a stalk one or two centimeters long ending a in a bristle. The flower is roughly a centimeter long and deep orange-red or dull red in color. The fruit is a hairless legume pod marked with longitudinal stripes.

<i>Lathyrus clymenum</i> Species of legume

Lathyrus clymenum, also called Spanish vetchling, is a flowering plant in the family Fabaceae, native to the Mediterranean. The seeds are used to prepare a Greek dish called fava santorinis. The plant is cultivated on the island of Santorini in Greece and was recently added to the European Union's products with a Protected Designation of Origin.

<i>Bruchus</i> Genus of beetles

Bruchus is a genus of beetles in the leaf beetle family, Chrysomelidae. They are distributed mainly in the Palearctic, especially in Europe. Several occur in other parts of the world, such as North America, Africa, and Australia, as introduced species. Several species are notorious agricultural pests.

<i>Alysicarpus vaginalis</i> Species of flowering plant in the legume family

Alysicarpus vaginalis is a species of flowering plant in the legume family, Fabaceae. It is native to parts of Africa and Asia, and it has been introduced to other continents, such as Australia and the Americas. It is cultivated as a fodder for livestock, for erosion control, and as a green manure. Common names include alyce clover, buffalo clover, buffalo-bur, one-leaf clover, and white moneywort.

<i>Vigna hosei</i> Species of legume

Vigna hosei, also known as the sarowak bean, is a perennial legume that grows in low-lying, humid, tropical areas but more commonly disturbed or roadside areas.

<i>Vicia bithynica</i> Species of flowering plant

Vicia bithynica known as Bithynian vetch, is a species of flowering plant in the bean family Fabaceae. It was described by Carl Linnaeus, initially as Lathyrus bithynicus but later moved to the genus Vicia (vetches). The specific name is derived from Bithynia, an ancient kingdom situated on the north coast of Anatolia, in modern day Turkey.

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