Cladrastis clade

The Cladrastis clade is a monophyletic clade of the flowering plant subfamily Faboideae (or Papilionaceae) that is found in eastern Asia and southern North America.^[2][3][4] It is consistently resolved in molecular phylogenies and is sister to the Meso-Papilionoideae.^{[1][3][4][5][6][7][8][9][10]} Evidence for the existence of this clade was first proposed based on morphological (floral), cytological, and biochemical evidence.^[11][12] It is predicted to have diverged from the other legume lineages 47.4±2.6 million years ago (in the Eocene).^[13]

Cladrastis clade
Pickeringia montana
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fabales
Family:	Fabaceae
Subfamily:	Faboideae
Clade:	Cladrastis clade (Wojciechowski et al. 2004[1]) Wojciechowski 2013[2]
Genera[3]
Cladrastis Raf. 1824 Pickeringia Nuttall 1840 Styphnolobium Schott 1830
Synonyms
Sophoreae sensu Polhill, 1981 pro parte 3

Description

This clade is composed of three genera: Cladrastis, the monotypic Pickeringia, and Styphnolobium.^[8] Fossils of species of Cladrastis and Styphnolobium have been discovered.^[14] The name of this clade is informal and is not assumed to have any particular taxonomic rank like the names authorized by the ICBN or the ICPN.^[2] The clade is defined as:

"The most inclusive crown clade containing Cladrastis kentukea (Dum. Cours.) Rudd 1971 but not Dermatophyllum secundiflorum (Ortega) Gandhi & Reveal 2011 or Swartzia simplex Spreng. 1825."^[2]