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Fabales

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The order Fabales Bromhead, including Leguminosae (= Fabaceae Lindl.), Polygalaceae Hoffmanns. & Link, Quillajaceae D. Don, and Surianaceae Arn., is a group that emerged from angiosperm phylogenies based on DNA sequence data (e.g. Chase et al. 1993 ; APG 2003 ). Fabales is part of eurosids I and together with Fagales, Cucurbitales, and Rosales forms the “nitrogen-fixing clade”

Quillajaceae and Surianaceae are relatively species-poor lineages compared with Leguminosae and Polygalaceae, and their floral morphology and development are unusual within Fabales [1] [2] [3]

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