''Styphnolobium'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed with ...

s in the pea family,

Fabaceae Fabaceae () or Leguminosae,International Code of Nomen ...

. It includes nine species of small

tree In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, e.g., including only woody plants with secondary growth, only ...

s and

shrub A shrub or bush is a small to medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple ...

s native to China and to the Americas, from the southern United States to Colombia. It belongs to subfamily

Faboideae The Faboideae are a subfamily of the flowering plant family Fabaceae or Leguminosae. An acceptable alternative name for the subfamily is Papilionoideae, or Papilionaceae when this group of plants is treated as a family. This subfamily is widely ...

, and was formerly included within a broader interpretation of the genus ''

Sophora ''Sophora'' is a genus of about 45 species of small trees and shrubs in the pea family Fabaceae. The species have a pantropical distribution. The generic name is derived from ''sophera'', an Arabic name for a pea-flowered tree. The genus formerl ...

''. It was recently assigned to the unranked,

monophyletic In biological cladistics for the classification of organisms, monophyly is the condition of a taxonomic grouping being a clade – that is, a grouping of organisms which meets these criteria: # the grouping contains its own most recent co ...

''Cladrastis'' clade. They differ from the genus '' Calia'' (mescalbeans) in having

deciduous In the fields of horticulture and botany, the term deciduous () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed Leaf, leaves, usually in the autumn; to the shedding of petals, aft ...

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

and

flower Flowers, also known as blooms and blossoms, are the reproductive structures of flowering plants ( angiosperms). Typically, they are structured in four circular levels, called whorls, around the end of a stalk. These whorls include: calyx, m ...

s in axillary, not terminal,

raceme A raceme () or racemoid is an unbranched, indeterminate growth, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are ...

s. The leaves are

pinnate Pinnation (also called pennation) is the arrangement of feather-like or multi-divided features arising from both sides of a common axis. Pinnation occurs in biological morphology, in crystals, such as some forms of ice or metal crystals, and ...

, with 9–21 leaflets, and the flowers in pendulous racemes similar to those of the

black locust ''Robinia pseudoacacia'', commonly known as black locust, is a medium-sized hardwood deciduous tree, belonging to the tribe Robinieae of the legume family Fabaceae. It is native to a few small areas of the United States, but it has been widely pl ...

. Necklacepod is a common name for plants in this genus.

Etymology

From

Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...

''styphno-'', ''stryphno-'' "sour, astringent" and ''lobion'' "pod", because of the fresh pods' pulp taste.

Species

''Styphnolobium'' comprises the following species:

Section ''Oresbios''

* '' Styphnolobium affine'' (Torr. & A. Gray) Walp., the coralbean or Eve's necklace is native to the southern

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

Texas Texas ( , ; or ) is the most populous U.S. state, state in the South Central United States, South Central region of the United States. It borders Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the we ...

Oklahoma Oklahoma ( ; Choctaw language, Choctaw: , ) is a landlocked U.S. state, state in the South Central United States, South Central region of the United States. It borders Texas to the south and west, Kansas to the north, Missouri to the northea ...

Arkansas Arkansas ( ) is a landlocked state in the West South Central region of the Southern United States. It borders Missouri to the north, Tennessee and Mississippi to the east, Louisiana to the south, Texas to the southwest, and Oklahoma ...

and

Louisiana Louisiana ( ; ; ) is a state in the Deep South and South Central regions of the United States. It borders Texas to the west, Arkansas to the north, and Mississippi to the east. Of the 50 U.S. states, it ranks 31st in area and 25 ...

. It is a large shrub or small tree, growing to 5–7 m tall, with white or pale violet flowers. The seeds of this species are believed to be poisonous. The sapwood leaches a yellow dye on contact with water. * '' Styphnolobium burseroides'' M. Sousa & Rudd * '' Styphnolobium caudatum'' M. Sousa & Rudd is native to

Nicaragua Nicaragua, officially the Republic of Nicaragua, is the geographically largest Sovereign state, country in Central America, comprising . With a population of 7,142,529 as of 2024, it is the third-most populous country in Central America aft ...

. * '' Styphnolobium conzattii'' (Standl.) M. Sousa & Rudd * '' Styphnolobium monteviridis'' M. Sousa & Rudd is native to

Central America Central America is a subregion of North America. Its political boundaries are defined as bordering Mexico to the north, Colombia to the southeast, the Caribbean to the east, and the Pacific Ocean to the southwest. Central America is usually ...

. * '' Styphnolobium parviflorum'' M. Sousa & Rudd * '' Styphnolobium protantherum'' M. Sousa & Rudd * '' Styphnolobium sporadicum'' M. Sousa & Rudd

Section ''Styphnolobium''

* ''

Styphnolobium japonicum ''Styphnolobium japonicum'', the Japanese pagoda tree (also known as the Chinese scholar tree and pagoda tree; syn. ''Sophora japonica'') is a species of deciduous tree in the subfamily Faboideae of the pea family Fabaceae. It was formerly in ...

'' (L.) Schott, the pagoda tree (Chinese Scholar, Japanese pagodatree; syn. ''Sophora japonica''), is native to eastern

Asia Asia ( , ) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometres, about 30% of Earth's total land area and 8% of Earth's total surface area. The continent, which ...

(mainly

China China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after ...

; despite the name, it is introduced in

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

), is a popular ornamental tree in

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...

and

South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic O ...

, grown for its white flowers, borne in late summer after most other flowering trees have long finished flowering. It grows into a lofty tree 10–20 m tall with an equal spread, and produces a fine, dark brown timber.

Uses

The pagoda tree is widely used in

bonsai Bonsai (; , ) is the Japanese art of Horticulture, growing and shaping miniature trees in containers, with a long documented history of influences and native Japanese development over a thousand years, and with unique aesthetics, cultural hist ...

gardening. The

Guilty Chinese Scholartree The zuihuai () is a specimen of the pagoda tree (''Styphnolobium japonicum'') located in Jingshan Park, Beijing, China. It is a tourist attraction and national landmark in Jingshan Park. The Chongzhen Emperor Zhu Youjian, the last ruler of the M ...

was a historic pagoda tree in

Beijing Beijing, Chinese postal romanization, previously romanized as Peking, is the capital city of China. With more than 22 million residents, it is the world's List of national capitals by population, most populous national capital city as well as ...

, on which the last emperor of the

Ming Dynasty The Ming dynasty, officially the Great Ming, was an Dynasties of China, imperial dynasty of China that ruled from 1368 to 1644, following the collapse of the Mongol Empire, Mongol-led Yuan dynasty. The Ming was the last imperial dynasty of ...

Chongzhen The Chongzhen Emperor (6 February 1611 – 25 April 1644), personal name Zhu Youjian, courtesy name Deyue,Wang Yuan (王源)，''Ju ye tang wen ji'' (《居業堂文集》), vol. 19. "聞之張景蔚親見烈皇帝神主題御諱字德約，行� ...

, hanged himself. ''Styphnolobium japonicum'' (Chinese: 槐; pinyin: huái; formerly ''Sophora japonica'') is one of the 50 fundamental herbs used in

traditional Chinese medicine Traditional Chinese medicine (TCM) is an alternative medicine, alternative medical practice drawn from traditional medicine in China. A large share of its claims are pseudoscientific, with the majority of treatments having no robust evidence ...

References

External links

''Styphnolobium japonicum'' (as ''Sophora japonica'')The Evil God in the Pagoda Tree
Japanese folktale with the Pagoda Tree at hyakumonogatari.com {{Taxonbar, from=Q11815640 Faboideae Fabaceae genera Medicinal plants