Exaceae

Exaceae
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Gentianales
Family:	Gentianaceae
Tribe:	Exaceae; Colla
Type genus
	Exacum; L.

Exaceae is a flowering plant tribe in the family Gentianaceae^[1] Exaceae comprises ca 180 species assigned to 8 monophyletic genera.^[2] showing major centres of endemism in continental Africa (ca 78 endemic species and two endemic genera), Madagascar (55 endemic species and four endemic genera) and the southern tip of India and Sri Lanka (14 endemic species).^[3]

Genera

Exacum L. (syn. Cotylanthera Blume)
Exochaenium Griseb.
Gentianothamnus Humbert
Klackenbergia Kissling
Lagenias E. Mey.
Ornichia Klack.
Tachiadenus Griseb.
Sebaea Sol. ex R. Br. (syn. Belmontia)

References

^ Yuan, Yong-Ming; Wohlauser, Sébastien; Moller, Michael; Chassot, Philippe; Mansion, Guilhem; Grant, Jason; Küpfer, Philippe; Klackenberg, Jens (2003). "Monophyly and relationships of the tribe Exaceae (Gentianaceae) inferred from nuclear ribosomal and chloroplast DNA sequences". Molecular Phylogenetics and Evolution. 28: 500–517. doi:10.1016/S1055-7903(03)00068-X.
^ Kissling, Jonathan; Yuan, Yong-Ming; Küpfer, Philippe; Mansion, Guilhem. "The polyphyletic genus Sebaea (Gentianaceae): A step forward in understanding the morphological and karyological evolution of the Exaceae". Molecular Phylogenetics and Evolution. 53: 734–748. doi:10.1016/j.ympev.2009.07.025.
^ Pirie, Michael; Litsios, Glenn; Bellstedt, Dirk; Salamin, Nicolas; Kissling, Jonathan. "Back to Gondwanaland: can ancient vicariance explain (some) Indian Ocean disjunct plant distributions?". Biology Letters. 11. doi:10.1098/rsbl.2015.0086.

[1] Yuan, Yong-Ming; Wohlauser, Sébastien; Moller, Michael; Chassot, Philippe; Mansion, Guilhem; Grant, Jason; Küpfer, Philippe; Klackenberg, Jens (2003). "Monophyly and relationships of the tribe Exaceae (Gentianaceae) inferred from nuclear ribosomal and chloroplast DNA sequences". Molecular Phylogenetics and Evolution. 28: 500–517. doi:10.1016/S1055-7903(03)00068-X.

[2] Kissling, Jonathan; Yuan, Yong-Ming; Küpfer, Philippe; Mansion, Guilhem. "The polyphyletic genus Sebaea (Gentianaceae): A step forward in understanding the morphological and karyological evolution of the Exaceae". Molecular Phylogenetics and Evolution. 53: 734–748. doi:10.1016/j.ympev.2009.07.025.

[3] Pirie, Michael; Litsios, Glenn; Bellstedt, Dirk; Salamin, Nicolas; Kissling, Jonathan. "Back to Gondwanaland: can ancient vicariance explain (some) Indian Ocean disjunct plant distributions?". Biology Letters. 11. doi:10.1098/rsbl.2015.0086.

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