Cercidoideae
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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.[1][2][3][4][5][6] 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).[7] The consensus agreed to the change, which was fully implemented in 2017.[8] 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.[8]
Many genera show unique palynology.[9][10]
Genera
Cercidoideae comprises the following genera[8][11][12] organized into tribes:[13]
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[14]
- Gigasiphon Drake
- Lasiobema (Korth.) Miq.[Note 1]
- Lysiphyllum (Benth.) deWit
- Phanera Lour.[15]
- Piliostigma Hochst.
- Schnella Raddi
- Tournaya A.Schmitz[15]
- Tylosema (Schweinf.) Torre & Hillc.
Extinct
Phylogeny
Molecular phylogenetics suggest the following relationships:[11][13][14][17]
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Notes
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- ↑ Some sources treat Lasiobema as a section of genus Phanera.
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References
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