''Claytonia'' (spring beauty) is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

s native to

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 ...

, North America, and

Central America Central America ( es, América Central or ) is a subregion of the Americas. Its boundaries are defined as bordering the United States to the north, Colombia to the south, the Caribbean Sea to the east, and the Pacific Ocean to the west. ...

. The vitamin-rich leaves can be eaten raw or cooked, and the

tubers Tubers are a type of enlarged structure used as storage organs for nutrients in some plants. They are used for the plant's perennation (survival of the winter or dry months), to provide energy and nutrients for regrowth during the next growing s ...

can be prepared like potatoes.

Description

The plants are somewhat fleshy and only a few centimeters in height. The

flower head A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ...

s are about in diameter.

Taxonomy

The genus was formerly included in the purslane family (

Portulacaceae The Portulacaceae are a family of flowering plants, comprising 115 species in a single genus '' Portulaca''. Formerly some 20 genera with about 500 species, were placed there, but it is now restricted to encompass only one genus, the other genera ...

), but with the adoption of the

APG IV system The APG IV system of flowering plant classification is the fourth version of a modern, mostly molecular-based, system of plant taxonomy for flowering plants (angiosperms) being developed by the Angiosperm Phylogeny Group (APG). It was published ...

, in 2009 it was moved to the family

Montiaceae Montiaceae are a family of flowering plants, comprising about 14 genera with about 230 known species, ranging from small herbaceous plants to shrubs. The family has a cosmopolitan distribution. The family Montiaceae was newly adopted in the APG ...

. A number of the species were formerly treated in the related genus '' Montia''. A comprehensive scientific study of ''Claytonia'' was published in 2006.

Species

Kew Kew () is a district in the London Borough of Richmond upon Thames. Its population at the 2011 census was 11,436. Kew is the location of the Royal Botanic Gardens ("Kew Gardens"), now a World Heritage Site, which includes Kew Palace. Kew is a ...

's Plants of the World Online lists 33 accepted species:

Etymology

The genus is named after

John Clayton John Clayton may refer to: Arts and entertainment Writing *John Clayton (architect) (died 1861), English architect and writer *John Bell Clayton and Martha Clayton, John Bell Clayton (c. 1907–1955), American writer *John Clayton (sportswriter) ( ...

, who collected specimens of various plants in North America and distributed them to botanists in Europe.

Distribution and habitat

The genus is primarily native to the mountain chains of

and North America. In the Old World, it is distributed northwest to

Kazakhstan Kazakhstan, officially the Republic of Kazakhstan, is a transcontinental country located mainly in Central Asia and partly in Eastern Europe. It borders Russia to the north and west, China to the east, Kyrgyzstan to the southeast, Uzbeki ...

Mongolia Mongolia; Mongolian script: , , ; lit. "Mongol Nation" or "State of Mongolia" () is a landlocked country in East Asia, bordered by Russia to the north and China to the south. It covers an area of , with a population of just 3.3 million, ...

, and eastern

Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-eig ...

. It is found in most of the northern

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 primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...

, with some species located in Guatemala. ''

Claytonia perfoliata ''Claytonia perfoliata'' ( syn. ''Montia perfoliata''), also known as miner's lettuce, Indian lettuce, winter purslane, or ''palsingat'' (Cahuilla), is a flowering plant in the family Montiaceae. It is an edible, fleshy, herbaceous, annual plant ...

'', the species for which the term miner's lettuce was coined, is distributed throughout the Mountain West of North America in moist soils and prefers areas that have been recently disturbed.

Uses

The leaves of the spring beauty are rich in vitamins and can be eaten raw or cooked. The roots are in the form of

tuber Tubers are a type of enlarged structure used as storage organs for nutrients in some plants. They are used for the plant's perennation (survival of the winter or dry months), to provide energy and nutrients for regrowth during the next growin ...

s which can be cooked and eaten like potatoes.

References

External links

CalFlora Database: ''Claytonia''
{{Taxonbar, from=Q164192 Caryophyllales genera Taxa named by Carl Linnaeus