The genus ''Exochaenium'' (23 species) is endemic to sub-Saharan Africa, with species occurring in most tropical and sub-tropical regions of the continent, particularly on the Katanga plateau (Angola, Democratic Republic of Congo and Zambia), with many extending to the Sudano-Zambesian and Guineo-Congolian regions. The genus is

monophyletic In biological cladistics for the classification of organisms, monophyly is the condition of a taxonomic grouping being a clade – that is, a grouping of organisms which meets these criteria: # the grouping contains its own most recent co ...

and is used to study the variation and evolution of

herkogamy Herkogamy (or hercogamy) is the spatial separation of the anthers and stigma in hermaphroditic angiosperms. It is a common strategy for reducing self-fertilization. Common forms *Approach herkogamy - (called "pin flowers") is displayed when the ...

Species

* '' Exochaenium alatum'' (Paiva and Nogueira) Kissling * '' Exochaenium baumianum'' (Gilg) Schinz * '' Exochaenium caudatum'' (Paiva and Nogueira) Kissling * ''

Exochaenium clavatum The genus ''Exochaenium'' (23 species) is endemic to sub-Saharan Africa, with species occurring in most tropical and sub-tropical regions of the continent, particularly on the Katanga plateau (Angola, Democratic Republic of Congo and Zambia), wit ...

'' (Paiva and Nogueira) Kissling * '' Exochaenium debile'' Welw. * '' Exochaenium dimidiatum'' (Sileshi) Kissling * '' Exochaenium exiguum'' A.W.Hill * ''

Exochaenium fernandesianum The genus ''Exochaenium'' (23 species) is endemic to sub-Saharan Africa, with species occurring in most tropical and sub-tropical regions of the continent, particularly on the Katanga plateau (Angola, Democratic Republic of Congo and Zambia), wit ...

'' (Paiva and Nogueira) Kissling * '' Exochaenium gracile'' (Welw.) Schinz * '' Exochaenium grande'' (E.Mey.) Griseb. * '' Exochaenium hockii'' (De Wild.) Kissling * '' Exochaenium lineariforme'' (Sileshi) Kissling * ''

Exochaenium macropterum The genus ''Exochaenium'' (23 species) is endemic to sub-Saharan Africa, with species occurring in most tropical and sub-tropical regions of the continent, particularly on the Katanga plateau (Angola, Democratic Republic of Congo and Zambia), wit ...

'' (Sileshi) Kissling * '' Exochaenium natalense'' (Schinz) Kissling and K.W.Grieve * ''

Exochaenium oliganthum The genus ''Exochaenium'' (23 species) is endemic to sub-Saharan Africa, with species occurring in most tropical and sub-tropical regions of the continent, particularly on the Katanga plateau (Angola, Democratic Republic of Congo and Zambia), wit ...

'' (Gilg) Kissling * ''

Exochaenium perparvum The genus ''Exochaenium'' (23 species) is endemic to sub-Saharan Africa, with species occurring in most tropical and sub-tropical regions of the continent, particularly on the Katanga plateau (Angola, Democratic Republic of Congo and Zambia), wit ...

'' (Sileshi) Kissling * ''

Exochaenium platypterum The genus ''Exochaenium'' (23 species) is endemic to sub-Saharan Africa, with species occurring in most tropical and sub-tropical regions of the continent, particularly on the Katanga plateau (Angola, Democratic Republic of Congo and Zambia), wit ...

'' (Baker) Schinz * ''

Exochaenium primulaeflorum The genus ''Exochaenium'' (23 species) is endemic to sub-Saharan Africa, with species occurring in most tropical and sub-tropical regions of the continent, particularly on the Katanga plateau (Angola, Democratic Republic of Congo and Zambia), wit ...

'' Welw. * ''

Exochaenium pumilum The genus ''Exochaenium'' (23 species) is endemic to sub-Saharan Africa, with species occurring in most tropical and sub-tropical regions of the continent, particularly on the Katanga plateau (Angola, Democratic Republic of Congo and Zambia), wit ...

'' (Baker) Hill * ''

Exochaenium pygmaeum The genus ''Exochaenium'' (23 species) is endemic to sub-Saharan Africa, with species occurring in most tropical and sub-tropical regions of the continent, particularly on the Katanga plateau (Angola, Democratic Republic of Congo and Zambia), wit ...

'' Milne-Redhead * ''

Exochaenium rotundifolium The genus ''Exochaenium'' (23 species) is endemic to sub-Saharan Africa, with species occurring in most tropical and sub-tropical regions of the continent, particularly on the Katanga plateau (Angola, Democratic Republic of Congo and Zambia), wit ...

'' (Peter) Kissling * ''

Exochaenium teucszii The genus ''Exochaenium'' (23 species) is endemic to sub-Saharan Africa, with species occurring in most tropical and sub-tropical regions of the continent, particularly on the Katanga plateau (Angola, Democratic Republic of Congo and Zambia), wit ...

'' (Schinz) Schinz * ''

Exochaenium wildemanianum The genus ''Exochaenium'' (23 species) is endemic to sub-Saharan Africa, with species occurring in most tropical and sub-tropical regions of the continent, particularly on the Katanga plateau (Angola, Democratic Republic of Congo and Zambia), wit ...

'' (Boutique) Kissling

References

{{Taxonbar, from=Q18171581 Gentianaceae genera Gentianaceae Taxa named by August Grisebach