Cercidoideae

Cercidoideae is a subfamily in the pea family, Fabaceae. Well-known members include Cercis (redbuds), including species widely cultivated as ornamental trees in the United States and Europe, Bauhinia, widely cultivated as an ornamental tree in tropical Asia, and Tylosema , a semi-woody genus of Africa. The subfamily occupies a basal position within the Fabaceae and is supported as monophyletic in many molecular phylogenies.^{[4][5][6][7][8][9]} At the 6th International Legume Conference, the Legume Phylogeny Working Group proposed elevating the tribe Cercidae to the level of subfamily within the Leguminosae (Fabaceae).^[10] The consensus agreed to the change, which was fully implemented in 2017.^[3] It has the following clade-based definition:

The most inclusive crown clade containing Cercis canadensis L. and Bauhinia divaricata L. but not Poeppigia procera C.Presl, Duparquetia orchidacea Baill., or Bobgunnia fistuloides (Harms) J.H.Kirkbr. & Wiersema.^[3]

Cercidoideae Temporal range: Late Paleocene - recent[1][2] PreꞒ Ꞓ O S D C P T J K Pg N
Cercis siliquastrum
Phanera variegata
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fabales
Family:	Fabaceae
Subfamily:	Cercidoideae Legume Phylogeny Working Group[3]
Type genus
Cercis L.
Genera
See text
Synonyms
Bauhiniaceae Martynov 1820 Cerceae Bronn 1822 Cercideae Bronn 1822

Many genera show unique palynology.^[11][12]

Genera

Lysiphyllum hookeri

Bauhinia divaricata

Cercidoideae comprises the following genera^[3][13][14] organized into tribes:^[15]

Cercideae

• Adenolobus (Harv. ex Benth. & Hook.f.) Torre & Hillc.
• Cercis L.
• Griffonia Baill.

Bauhinieae

• Barklya F. Muell.
• Bauhinia L.
• Brenierea Humbert
• Cheniella R.Clark & Mackinder^[16]
• Gigasiphon Drake
• Lasiobema (Korth.) Miq.^{[Note 1]}
• Lysiphyllum (Benth.) deWit
• Phanera Lour.^[17]
• Piliostigma Hochst.
• Schnella Raddi
• Tournaya A.Schmitz^[17]
• Tylosema (Schweinf.) Torre & Hillc.

Extinct

• †Bauhcis Calvillo-Canadell and Cevallos-Ferriz^[18]

Phylogeny

Molecular phylogenetics suggest the following relationships:^{[13][15][16][19]}

Fabales	Detarioideae (outgroup) Cercidoideae Cercis Adenolobus Griffonia Piliostigma Brenierea Bauhinia sensu stricto Gigasiphon Tylosema Schnella Barklya Lysiphyllum Cheniella Lasiobema Phanera

Notes

1. Some sources treat Lasiobema as a section of genus Phanera.