Cercidoideae Explained

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. 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.
Many genera show unique palynology.[8] [9]

Genera

Cercidoideae comprises the following genera[10] [11] organized into tribes:[12]

Cercideae

Bauhinieae

Extinct

Phylogeny

Molecular phylogenetics suggest the following relationships:[10] [12] [13] [16]

Notes and References

  1. Book: Doyle JJ, Chappill JA, Bailey CD, Kajita T . 2000 . Towards a comprehensive phylogeny of legumes: Evidence from rbcL sequences and non-molecular data . Herendeen PS, Bruneau A . Advances in Legume Systematics, Part 9 . http://www.kewbooks.com/asps/ShowDetails.asp?id=52 . Kew, UK . Royal Botanic Gardens . 1–20 . 184246017X .
  2. Bruneau A, Forest F, Herendeen PS, Klitgaard BB, Lewis GP . 2001 . Phylogenetic Relationships in the Caesalpinioideae (Leguminosae) as Inferred from Chloroplast trnL Intron Sequences . . 26 . 3 . 487–514 . 10.1043/0363-6445-26.3.487 . 31 January 2024 .
  3. Davis CC, Fritsch PW, Li J, Donoghue MJ . 2002 . Phylogeny and Biogeography of Cercis (Fabaceae): Evidence from Nuclear Ribosomal ITS and Chloroplast ndhF Sequence Data . . 27 . 2 . 289–302 . 10.1043/0363-6445-27.2.289 . 31 January 2024 .
  4. 10.3732/ajb.91.11.1846 . A phylogeny of legumes (Leguminosae) based on analysis of the plastid matK gene resolves many well-supported subclades within the family . 2004 . Wojciechowski MF, Lavin M, Sanderson MJ . 13934619 . . 91 . 1846–62 . 11 . 21652332 . free .
  5. Bruneau A, Mercure M, Lewis GP, Herendeen PS . 2008 . Phylogenetic patterns and diversification in the caesalpinioid legumes . . 86 . 7 . 697–718 . 10.1139/b08-058.
  6. LPWG [Legume Phylogeny Working Group] . 2013 . Legume phylogeny and classification in the 21st century: progress, prospects and lessons for other species-rich clades . . 62 . 2 . 217–248 . 10.12705/622.8. 11336/27330 .
  7. Towards a new classification system for legumes: Progress report from the 6th International Legume Conference . 2013 . LPWG [Legume Phylogeny Working Group] . . 89 . 3–9 . 10.1016/j.sajb.2013.07.022 . free . 11336/29300 . free .
  8. Banks H, Forest F, Lewis GP . 2013 . Palynological contribution to the systematics and taxonomy of Bauhinia s.l. (Leguminosae: Cercideae) . South African Journal of Botany . 89 . 219–226 . 10.1016/j.sajb.2013.07.028. free .
  9. Banks H, Forest F, Lewis GP . 2014 . Evolution and diversity of pollen morphology in tribe Cercideae (Leguminosae) . . 63 . 2 . 299–314 . 10.12705/632.37 .
  10. The genus Bauhinia s.l. (Leguminosae): A phylogeny based on the plastid trnL–trnF region . 2009 . Sinou C, Forest F, Lewis GP, Bruneau A . . 87 . 10 . 947–960 . 10.1139/B09-065 .
  11. Reorganization of the Cercideae (Fabaceae: Caesalpinioideae) . 2010 . Wunderlin RP . . 48 . 1–5 .
  12. Reorganization of the Cercideae (Fabaceae: Caesalpinioideae) . 2010 . Wunderlin RP . . 48 . 1–5 .
  13. Clark RP, Mackinder BA, Banks H . 2017 . Cheniella gen. nov. (Leguminosae: Cercidoideae) from southern China, Indochina and Malesia . European Journal of Taxonomy . 360 . 1–37 . 10.5852/ejt.2017.360. free .
  14. Jiang . Kai-Wen . New Combinations in the Genus Phanera (Fabaceae: Cercidoideae) of China . J. Jpn. Bot. . 2020 . 95 . 4 . 211–213.
  15. 10.1016/S0034-6667(02)00135-5 . Bauhcis moranii gen. et sp. nov. (Cercideae, Caesalpinieae), an Oligocene plant from Tepexi de Rodríguez, Puebla, Mex., with leaf architecture similar to Bauhinia and Cercis . 2002 . Calvillo-Canadell L, Cevallos-Ferriz SR . . 122 . 171–184 . 3–4 .
  16. Wang YH, Wicke S, Wang H, Jin JJ, Chen SY, Zhang SD, Li DZ, Yi TS . 2018 . Plastid Genome Evolution in the Early-Diverging Legume Subfamily Cercidoideae (Fabaceae) . Frontiers in Plant Science . 138 . 138 . 1–12 . 10.3389/fpls.2018.00138. 29479365 . 5812350 . free .

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