1. Styphnolobium japonicum (L.) Schott

    1. Although its Latin name, Styphnolobium japonicum, implies that the pagoda tree is a Japanese plant, it is in fact native to China. The species was first described under the name Sophora japonica, based on cultivated material from Japan, and thus the choice of species name. It was introduced to Britain in 1753 by the famous nurseryman James Gordon, and it is believed that one old veteran specimen tree at Kew is one of an original five planted in the Gardens in 1760. They are thought to have been the first in the country. Collectively these original trees are known as Kew's 'Old Lions'.

[KSP]

Kew Species Profiles

General Description
The pagoda tree was introduced to Britain in 1753 and Kew's own specimen is believed to date back to 1760.

Although its Latin name, Styphnolobium japonicum, implies that the pagoda tree is a Japanese plant, it is in fact native to China. The species was first described under the name Sophora japonica, based on cultivated material from Japan, and thus the choice of species name. It was introduced to Britain in 1753 by the famous nurseryman James Gordon, and it is believed that one old veteran specimen tree at Kew is one of an original five planted in the Gardens in 1760. They are thought to have been the first in the country. Collectively these original trees are known as Kew's 'Old Lions'.

Styphnolobium japonicum is used in traditional medicine in Asia, where the flower buds are used for their haemostatic and astringent properties. Despite their strong purgative properties, extracts of the leaves and fruits were once used in China to adulterate opium.

Species Profile

Geography and distribution

The pagoda tree is native to China but for a long time has been cultivated and naturalised in Japan, from where the species was originally described. Styphnolobium japonicum is widely cultivated elsewhere in the world, including in the UK.

Description

Overview: Styphnolobium japonicum is a deciduous tree, 15–25 m tall, usually branching low down when growing in the open but capable of forming a tall, clean trunk. The bark of mature trees is grey and corrugated (similar to ash trees).

Leaves:The leaves are pinnate (divided like a feather) and composed of 7–17 ovate to oval leaflets.

Flowers:The creamy white flowers are about 1 cm long and held in showy clusters at the ends of branches.

Fruits: The hairless, necklace-like fruits are 3–12 cm long and 1–8-seeded.

Flowering of the pagoda tree

Styphnolobium japonicumapparently does not flower when young; flowering normally only commences when the tree is 30–40 years old. Old trees flower freely, especially after hot summers. Most flowers fall early to form a dense, white carpet on the ground. The pagoda tree at Kew usually flowers in September, whereas in its native China it flowers in August/September and fruits in October/November.

Threats and conservation

The pagoda tree's conservation status in China is not known; however the tree is widely cultivated and therefore the species is not threatened on a global basis.

Uses

The pagoda tree is grown as an ornamental and for its durable timber, which is used for furniture and construction. The leaves and flowers are edible but the pods are toxic. Yellow and grey dyes extracted from the pods have been used in the silk and batik industries.

This species at Kew

The pagoda tree can be seen growing to the west of the Princess of Wales Conservatory at Kew.

Dried and spirit-preserved specimens of Styphnolobium japonicum are held in Kew’s Herbarium, where they are available to researchers by appointment. The details of some of these specimens can be seen online in Kew’s Herbarium Catalogue.

Kew's 'Old Lions'

Kew’s ‘Old Lions’ are some of the few remaining trees with the oldest actual known planting date of 1762. They comprise: Ginkgo biloba (maidenhair tree), Styphnolobium japonicum (pagoda tree) and Platanus orientalis (oriental plane) to the west of the Princess of Wales Conservatory; Robinia pseudoacacia (black locust) on the lawn to the front of the Orangery; and Zelkova carpinifolia (Caucasian elm) situated in the Herbarium paddock.

Some of these trees were brought from a neighbouring estate at Whitton which belonged to the Duke of Argyll (the uncle of Lord Bute, the botanical advisor to Princess Augusta). They became part of a new five acre arboretum, laid out by William Aiton, which sat next to the Orangery.

Now, 250 years after these trees were planted, Kew is celebrating the ‘Old Lions’, which can be seen in all their splendour, still growing in the Gardens.

Why call it the 'pagoda tree'?

The pagoda tree’s common name probably arose because it was often planted in the grounds of Buddhist temples. Some of the original pagoda trees in the gardens at Kew were planted near to the Pagoda (built in 1761), presumably because of their Chinese origins and its common name. It is still popular as an ornamental, due to its showy inflorescences (flowering panicles) of creamy white flowers.

Distribution
China
Ecology
In China, thickets and upland forest on rocky mountain slopes.
Conservation
Widely cultivated and therefore unlikely to be threatened on a global scale.
Hazards

The leaves and flowers are edible but the pods are toxic.

Images

Distribution

Found In:

Japan

Introduced Into:

Cape Provinces, China North-Central, China South-Central, China Southeast, Czechoslovakia, Egypt, France, Free State, Hainan, India, Inner Mongolia, Iraq, Kenya, Kirgizstan, Korea, Krym, Manchuria, North Caucasus, Northern Provinces, Pakistan, Qinghai, Romania, South European Russi, Tadzhikistan, Tibet, Transcaucasus, Turkmenistan, Ukraine, Uzbekistan, Vietnam, West Himalaya, Xinjiang, Yemen, Zimbabwe

Common Names

English
Pagoda tree

Styphnolobium japonicum (L.) Schott appears in other Kew resources:

First published in Wiener Z. Kunst 3: 844 (1829)

Accepted in:

  • [1] Chang, C.S., Kim, H. & Chang, K.S. (2014) Provisional checklist of vascular plants for the Korea peninsula flora (KPF) . DESIGNPOST.
  • [3] (2010-continuously updated) ILDIS - International Legume Database & Information Service . http://www.ildis.org/.
  • [10] Kumar, S. & Sane, P.V. (2003) Legumes of South Asia. A Checklist . Royal Botanic Gardens, Kew.
  • [15] Yakovlev, G.P., Sytin, A.K. & Roskov, Y.R. (1996) Legumes of Northern Eurasia. A checklist . Royal Botanic Gardens, Kew.
  • [17] Lock, J.M. & Heald, J. (1994) Legumes of Indo-China a checck-list . Royal Botanic Gardens, Kew.

Synonym in:

  • [4] Flora of China Editorial Committee (2010) Flora of China 10: 1-642. Science Press (Beijing) & Missouri Botanical Garden Press (St. Louis). [Cited as Sophora japonica.]

Literature

  • [2] (2012) Journal of Economic and Taxonomic Botany 36: 33-45
  • [5] Flora of China Editorial Committee (2010) Flora of China 10: 1-642. Science Press (Beijing) & Missouri Botanical Garden Press (St. Louis).
  • [6] Pennington, R. T., Stirton, C. H. & Schrire, B. D. (2005). Tribe Sophoreae. In: Legumes of the World, ed. G. Lewis, B. Schrire, B. Mackinder & M. Lock, pp. 227-249. Royal Botanic Gardens, Kew.
  • [7] Chen, J. K. & Chen, T. T. (2004). Chinese Medicinal Herbology and Pharmacology. Art of Medicine Press, California.
  • [8] (2003) Strelitzia 14: 1-1231. National Botanical Institute, Pretoria.
  • [9] Kite, G. C. & Pennington, R. T. (2003). Quinolizidine alkaloid status of Styphnolobium and Cladrastis (Leguminosae). Biochemical Systematics and Ecology 31: 1409-1416.
  • [11] Kumar, S. & Sane, P.V. (2003) Legumes of South Asia. A Checklist . Royal Botanic Gardens, Kew.
  • [12] Khanh, T. C. (1999). Styphnolobium japonicum (L.) Schott. In: Plant Resources of South-East Asia 12(1): Medicinal and poisonous plants 1, ed. L. S. de Padua, N. Bunyapraphatsara & R. H. M. J. Lemmens. Backhuys, Leiden.
  • [13] Wood, J.R.I. (1997) A handbook of the Yemen Flora . Royal Botanic Gardens, Kew.
  • [14] Lee, W.T. (1996) Lineamenta Florae Koreae . Soul T'ukpyolsi: Ak'ademi Sojok.
  • [16] Yakovlev, G.P., Sytin, A.K. & Roskov, Y.R. (1996) Legumes of Northern Eurasia. A checklist . Royal Botanic Gardens, Kew.
  • [18] Lock, J.M. & Heald, J. (1994) Legumes of Indo-China a checck-list . Royal Botanic Gardens, Kew.
  • [19] Sousa S. M. & Rudd, V. E. (1993). Revision del genero Styphnolobium. Annals of the Missouri Botanical Garden 80: 270-283.
  • [20] Lock, J.M. (1989) Legumes of Africa a check-list . Royal Botanic Gardens, Kew.
  • [21] Bean, W. J. (1981). Trees and Shrubs Hardy in the British Isles, 8th edn. John Murray, London.
  • [22] (1974) Flora of Iraq 3: 1-662. Ministry of Agriculture & Agrarian Reform, Baghdad.
  • [23] Tutin, T.G. & al. (eds.) (1968) Flora Europaea 2: 1-469. Cambridge University Press.

Sources

Kew Species Profiles
Kew Species Profiles
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Kew Science Photographs
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World Checklist of Selected Plant Families
World Checklist of Selected Plant Families(2016). Published on the Internet http://apps.kew.org/wcsp/
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