The genus ''Exochaenium'' (22 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 cladistics for a group of organisms, monophyly is the condition of being a clade—that is, a group of taxa composed only of a common ancestor (or more precisely an ancestral population) and all of its lineal descendants. Monophyletic gro ...
and is used to study the variation and evolution of
herkogamy.
Species
* ''
Exochaenium alatum''
(Paiva and Nogueira) Kissling
* ''
Exochaenium baumianum''
(Gilg) Schinz
* ''
Exochaenium caudatum''
(Paiva and Nogueira) Kissling
* ''
Exochaenium clavatum''
(Paiva and Nogueira) Kissling
* ''
Exochaenium debile''
Welw.
* ''
Exochaenium dimidiatum''
(Sileshi) Kissling
* ''
Exochaenium exiguum''
A.W.Hill
* ''
Exochaenium fernandesianum''
(Paiva and Nogueira) Kissling
* ''
Exochaenium gracile''
(Welw.) Schinz
* ''
Exochaenium grande''
(E.Mey.) Griseb.
* ''
Exochaenium hockii
The genus ''Exochaenium'' (22 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 ...
''
(De Wild.) Kissling
* ''
Exochaenium lineariforme''
(Sileshi) Kissling
* ''
Exochaenium macropterum''
(Sileshi) Kissling
* ''
Exochaenium oliganthum''
(Gilg) Kissling
* ''
Exochaenium perparvum''
(Sileshi) Kissling
* ''
Exochaenium platypterum''
(Baker) Schinz
* ''
Exochaenium primulaeflorum''
Welw.
* ''
Exochaenium pumilum''
(Baker) Hill
* ''
Exochaenium pygmaeum''
Milne-Redhead
* ''
Exochaenium rotundifolium''
(Peter) Kissling
* ''
Exochaenium teucszii''
(Schinz) Schinz
* ''
Exochaenium wildemanianum''
(Boutique) Kissling
References
{{Taxonbar, from=Q18171581
Gentianaceae genera
Gentianaceae