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Robinioids
The robinioids are one of the four major clades (genisitoids, dalbergioids, millettioids and robinioids) in subfamily Faboideae of the flowering plant family Fabaceae (Leguminosae). It is composed of the traditional tribes Loteae, Sesbanieae and Robinieae. It is a large and important clade that is distributed in mostly temperate areas. Species in this clade share a unique determinate root nodule structure. The clade is predicted to have diverged from the other legume lineages 48.3±1.0 million years ago (in the Eocene).
==History==
Only two tribes (Loteae and Robinieae) were traditionally included in clade robinioids. Lavin & Schrire later included Sesbanieae into clade robinioids.〔Lavin & Schrire, 2005〕 Tribe Robinieae is primarily in tropical and arid temperate areas, containing mostly trees and shrubs of New World. Tribe Loteae are herbaceous and small shrubby legumes closely related with Old World tribe Galegeae.〔Dormer, 1945〕
Loteae was originally a smaller group of legumes until later in 1994 Polhill merged Loteae and tribe Coronilleae and greatly expanded Loteae.〔Polhill, 1994〕 Sesbanieae is a tribe with single genus ''Sesbania'', which was originally placed under tribe Robinieae.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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