Styphnolobium

Styphnolobium is a small genus of three or four species of small trees and shrubs in the subfamily Faboideae of the pea family Fabaceae, formerly included within a broader interpretation of the genus Sophora. It was recently assigned to the unranked, monophyletic Cladrastis clade. They differ from the genus Calia (mescalbeans) in having deciduous leaves and flowers in axillary, not terminal, racemes. The leaves are pinnate, with 9–21 leaflets, and the flowers in pendulous racemes similar to those of the black locust. Necklacepod is a common name for plants in this genus. From Greek styphno-, stryphno- "sour, astringent" and lobion "pod", because of the fresh pods' pulp taste. Styphnolobium comprises the following species: Styphnolobium affine (Torr. & A. Gray) Walp., the coralbean or Eve's necklace is native to the southern United States in Texas, Oklahoma, Arkansas and Louisiana. 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. Styphnolobium conzattii (Standl.) M. Sousa & Rudd Styphnolobium monteviridis M. Sousa & Rudd is native to Central America. Styphnolobium parviflorum M. Sousa & Rudd Styphnolobium protantherum M. Sousa & Rudd Styphnolobium sporadicum M. Sousa & Rudd Styphnolobium japonicum (L.) Schott, the pagoda tree (Chinese Scholar, Japanese pagodatree; syn. Sophora japonica), is native to eastern Asia (mainly China; despite the name, it is introduced in Japan), is a popular ornamental tree in Europe, North America and South Africa, 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. The pagoda tree is widely used in bonsai gardening.

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Related concepts (4)

Root nodule

Root nodules are found on the roots of plants, primarily legumes, that form a symbiosis with nitrogen-fixing bacteria. Under nitrogen-limiting conditions, capable plants form a symbiotic relationship with a host-specific strain of bacteria known as rhizobia. This process has evolved multiple times within the legumes, as well as in other species found within the Rosid clade. Legume crops include beans, peas, and soybeans.

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 distributed, and members are adapted to a wide variety of environments. Faboideae may be trees, shrubs, or herbaceous plants. Members include the pea, the sweet pea, the laburnum, and other legumes. The pea-shaped flowers are characteristic of the Faboideae subfamily and root nodulation is very common.

Styphnolobium