''Gentianothamnus'' is a monotypic plant genus in the gentian family ( Gentianaceae), tribe

Exaceae Exaceae is a flowering plant tribe in the family Gentianaceae. Exaceae comprises about 180 species assigned to eight monophyletic genera, with major centres of endemism in continental Africa (about 78 endemic species and two endemic genera), Mada ...

. The sole species is ''Gentianothamnus madagascariensis''. It is endemic to Madagascar.''Gentianothamnus madagascariensis'' Humbert
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Plants of the World Online Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants by ...

'', Kew Science. Accessed 20 September 2022.

References

Gentian Research Network
{{Taxonbar, from=Q8963777 Gentianaceae Endemic flora of Madagascar Monotypic Gentianales genera Gentianaceae genera