Exostyleae

Exostyleae
Zollernia latifolia
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Fabales
Family:	Fabaceae
Subfamily:	Faboideae
Clade:	Meso-Papilionoideae
Tribe:	Exostyleae (Cardoso et al. 2012[1]) Cardoso et al. 2013[2][3]
Synonyms
Lecointea clade Lecointioid clade Cardoso et al. 2012[1] Lecointioids Sophoreae sensu Polhill, 1981 pro parte 4 Swartzieae sensu Cowan, 1981 pro parte B Swartzieae sensu Cowan, 1981 pro parte C

The tribe Exostyleae is an early-branching monophyletic clade of the flowering plant subfamily Faboideae (or Papilionaceae) that are mostly found in Neotropical rainforests.[2]

Description

This clade is composed of 6 genera, most of which were traditionally assigned to the tribe Swartzieae.[4][5] However, recent molecular phylogenetic analyses circumscribed these six genera into a strongly supported monophyletic clade.[1][2][6][7][8][9] Synapomorphic traits that unite the members of this clade include non-papilionate flowers, "serrate and sometimes spinescent leaflet or leaf margins, standard position variable in the floral bud, basifixed anthers, and drupaceous fruits".[1][2][6][7] They are also united by wood anatomy, sharing an "uncommon presence of crystals in ray cells",[1][10][11] and floral ontogeny, sharing "unidirectional initiation of five sepals, simultaneous initiation of petals, and[…]unusual antepetalous stamens initiating before the antesepalous ones."[12]

Genera

• Exostyles Schott
• Harleyodendron R. S. Cowan
• Holocalyx Micheli
• Lecointea Ducke.
• Uribea Dugand & Romero
• Zollernia Wied-Neuw. & Nees

References

1. 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". American Journal of Botany. 99 (12): 1991–2013. doi:10.3732/ajb.1200380. PMID 23221500.
2. Cardoso D, Pennington RT, de Queiroz LP, Boatwright JS, Van Wyk BE, Wojciechowski MF, Lavin M (2013). "Reconstructing the deep-branching relationships of the papilionoid legumes". South African Journal of Botany. 89: 58–75. doi:10.1016/j.sajb.2013.05.001. hdl:10566/3193.
3. Wojciechowski MF (2013). "Towards a new classification of Leguminosae: Naming clades using non-Linnaean phylogenetic nomenclature". South African Journal of Botany. 89: 85–93. doi:10.1016/j.sajb.2013.06.017.
4. Cowan RS (1981). "Swartzieae". In Polhill RM, Raven PH (eds.). Advances in Legume Systematics, Part 1. Royal Botanic Gardens, Kew. pp. 209–212. ISBN 9780855212247. Archived from the original on 2013-07-23. Retrieved 2014-01-29.
5. Ireland HE, Pennington RT, Preston J (2000). "Molecular systematics of the Swartzieae". In Herendeen PS, Bruneau A (eds.). Advances in Legume Systematics, Part 9. Kew, UK: Royal Botanic Gardens. pp. 277–298. ISBN 978-1842460177. Archived from the original on 2014-01-16. Retrieved 2014-01-29.
6. Herendeen PS (1995). "Phylogenetic relationships of the tribe Swartzieae". In Crisp MD, Doyle JJ (eds.). Advances in Legume Systematics, Part 7: Phylogeny. Royal Botanic Gardens, Kew. pp. 123–131. ISBN 978-0947643799. Archived from the original on 2014-01-17. Retrieved 2014-01-29.
7. de Freitas Mansano V, Bittrich V, de Azevedo Tozzi AMGS, de Souza AP (2004). "Composition of the Lecointea clade (Leguminosae, Papilionoideae, Swartzieae), a re-evaluation based on combined evidence from morphology and molecular data". Taxon. 53 (4): 85–93. doi:10.2307/4135566. JSTOR 4135566.
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". American Journal of Botany. 91 (11): 1846–862. doi:10.3732/ajb.91.11.1846. PMID 21652332.
9. LPWG [Legume Phylogeny Working Group] (2013). "Legume phylogeny and classification in the 21st century: progress, prospects and lessons for other species-rich clades" (PDF). Taxon. 62 (2): 217–248. doi:10.12705/622.8. hdl:10566/3455.
10. Gasson P. (1996). "Wood anatomy of the tribe Swartzieae with comments on related papilionoid and caesalpinioid Leguminosae". International Association of Wood Anatomists Journal. 17 (1–4): 45–75. doi:10.1163/22941932-90000624.
11. Gasson P, Webley P (1999). "Wood anatomy of Exostyles venusta (Swartzieae, Papilionoideae, Leguminosae)" (PDF). International Association of Wood Anatomists Journal. 20 (1): 59–66. doi:10.1163/22941932-90001548. Archived from the original (PDF) on 2014-02-03. Retrieved 2014-01-29.
12. de Freitas Mansano V, Tucker SC, de Azevedo Tozzi AM (2002). "Floral ontogeny of Lecointea, Zollernia, Exostyles, and Harleyodendron (Leguminosae: Papilionoideae: Swartzieae s.l.)". American Journal of Botany. 89 (10): 1553–1569. doi:10.3732/ajb.89.10.1553. PMID 21665582.