Exaceae Explained

Exaceae is a flowering plant tribe in the family Gentianaceae.^[1] Exaceae comprises about 180 species assigned to eight monophyleticgenera,^[2] with major centres of endemism incontinental Africa (about 78 endemic species and two endemicgenera), Madagascar (55 endemic species and four endemicgenera) 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.
• Sebaea Sol. ex R. Br. (syn. Belmontia)
• Tachiadenus Griseb.

Notes and References

1. Yuan. Yong-Ming. Wohlauser. Sébastien. Moller. Michael. Chassot. Philippe. Mansion. Guilhem. Grant. Jason. Küpfer. Philippe. Klackenberg. Jens. Monophyly and relationships of the tribe Exaceae (Gentianaceae) inferred from nuclear ribosomal and chloroplast DNA sequences. Molecular Phylogenetics and Evolution. 2003. 28. 3. 500–517. 10.1016/S1055-7903(03)00068-X. 12927134.
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. 3. 734–748. 10.1016/j.ympev.2009.07.025. 19646540. 2009.
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. 6. 10.1098/rsbl.2015.0086. 26063747. 4528461. 20150086. 2015.