Biology:Swartzieae

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Short description: Clade of legumes

Swartzieae
13010-Swartzia picta-Caura.JPG
Swartzia picta
Scientific classification e
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Tribe: Swartzieae
DC.
Type genus
Swartzia
Schreb.
Subclades and Genera

See text.

Swartzieae distribution.svg
Distribution of the Swartzieae
Synonyms
  • Swartziaceae Bartling
  • Swartzieae clade
  • Swartzieae sensu stricto
  • Swartzioid clade Torke and Schaal 2008[1]
  • Swartzioids sensu lato
  • Tounateeae Baill. 1870

The tribe Swartzieae is an early-branching monophyletic clade of the flowering plant subfamily Faboideae or Papilionaceae. Traditionally this tribe has been used as a wastebasket taxon to accommodate genera of Faboideae which exhibit actinomorphic, rather than zygomorphic floral symmetry and/or incompletely differentiated petals and free stamens.[2][3] It was recently revised and most of its genera were redistributed to other tribes (Amburaneae, Baphieae, and Exostyleae).[2][4][5] Under its new circumscription, this clade is consistently resolved in molecular phylogenies.[2][4][6][7][8][9][10][1][11] Members of this tribe possess "non-papilionate swartzioid flowers[…]largely characterized by a tendency to lack petals combined with a profusion and elaboration of free stamens"[2][4] and a "lack of unidirectional order in the initiation of the stamens".[1] They also have "complete or near complete fusion of sepals resulting from intercalary growth early in development, relatively numerous stamens, and a single or no petal, with other petals not at all apparent in development."[12] The tribe is predicted to have diverged from the other legume lineages 48.9±2.8 million years ago (in the Eocene).[10]

Subclades and genera

Swartzioids sensu stricto Ireland et al. 2000

The members of this clade occur mainly in lowland rain forests.[4][6][1]

Atelioids Ireland et al. 2000

The members of this clade are distinguished by "a nearly actinomorphic androecium with basifixed anthers, exarillate seeds, and a tendency toward alternate leaflets."[4][1] They occur mainly in neotropical, seasonally-dry tropical woodlands.[4]

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Torke BM; Schaal BA (2008). "Molecular phylogenetics of the species-rich neotropical genus Swartzia (Leguminosae, Papilionoideae) and related genera of the swartzioid clade". Am J Bot 95 (2): 215–228. doi:10.3732/ajb.95.2.215. PMID 21632346. 
  2. ↑ 2.0 2.1 2.2 2.3 Cardoso D; Pennington RT; de Queiroz LP; Boatwright JS; Van Wyk B-E; Wojciechowskie MF; Lavin M (2013). "Reconstructing the deep-branching relationships of the papilionoid legumes". S Afr J Bot 89: 58–75. doi:10.1016/j.sajb.2013.05.001. 
  3. ↑ Polhill RM (1994). "Classification of the Leguminosae". Phytochemical Dictionary of the Leguminosae, Plants and Their Constituents. 1. Chapman and Hall/CRC Press, London. pp. xxv–xlvii. ISBN 9780412397707. http://www.crcpress.com/product/isbn/9780412397707. 
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 Cardoso D; de Queiroz LP; Pennington RT; de Lima HC; Fonty É; Wojciechowski MF; Lavin M (2012). "Revisiting the phylogeny of papilionoid legumes: new insights from comprehensively sampled early-branching lineages". Am J Bot 99 (12): 1991–2013. doi:10.3732/ajb.1200380. PMID 23221500. 
  5. ↑ Wojciechowski MF (2013). "Towards a new classification of Leguminosae: Naming clades using non-Linnaean phylogenetic nomenclature". S Afr J Bot 89: 85–93. doi:10.1016/j.sajb.2013.06.017. 
  6. ↑ 6.0 6.1 Ireland HE; Pennington RT; Preston J (2000). "Molecular systematics of the Swartzieae". Advances in Legume Systematics, Part 9. Kew, UK: Royal Botanic Gardens. pp. 277–298. ISBN 184246017X. http://www.kewbooks.com/asps/ShowDetails.asp?id=52. 
  7. ↑ Pennington RT; Lavin M; Ireland H; Klitgaard B; Preston J; Hu J-M (2001). "Phylogenetic relationships of basal papilionoid legumes based upon sequences of the chloroplast trnL intron". Syst Bot 55 (5): 818–836. doi:10.1043/0363-6445-26.3.537. http://www.bioone.org/doi/abs/10.1043/0363-6445-26.3.537. 
  8. ↑ Wojciechowski MF; Lavin M; Sanderson MJ (2004). "A phylogeny of legumes (Leguminosae) based on analysis of the plastid matK gene resolves many well-supported subclades within the family". Am J Bot 91 (11): 1846–1862. doi:10.3732/ajb.91.11.1846. PMID 21652332. 
  9. ↑ Ireland HE (2005). "Tribe Swartzieae". Legumes of the world. Kew, UK: Royal Botanic Gardens. pp. 214–225. ISBN 1900347806. http://www.kew.org/science-research-data/lowo/TaxonomicView/SubFamily/Tribe/index.htm?kew_lowo_accepted_name_path=Swartzieae. 
  10. ↑ 10.0 10.1 Lavin M; Herendeen PS; Wojciechowski MF (2005). "Evolutionary rates analysis of Leguminosae implicates a rapid diversification of lineages during the Tertiary". Syst Biol 54 (4): 575–594. doi:10.1080/10635150590947131. PMID 16085576. http://sysbio.oxfordjournals.org/content/54/4/575. 
  11. ↑ LPWG [Legume Phylogeny Working Group] (2013). "Legume phylogeny and classification in the 21st century: progress, prospects and lessons for other species-rich clades". Taxon 62 (2): 217–248. doi:10.12705/622.8. https://www.zora.uzh.ch/id/eprint/78167/1/Taxon_2013_217-248.pdf. 
  12. ↑ Tucker SC (2003). "Floral ontogeny in Swartzia (Leguminosae: Papilionoideae: Swartzieae): Distribution and role of the ring meristem". Am J Bot 90 (9): 1271–1292. doi:10.3732/ajb.90.9.1271. PMID 21659227. 
  13. ↑ Ireland HE (2007). "Taxonomic changes in the South American genus Bocoa (Leguminosae–Swartzieae): Reinstatement of the name Trischidium, and a synopsis of both genera". Kew Bull 62 (2): 333–350. 

Wikidata ☰ Q7653958 entry



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