''Oncotheca'' is a genus of tree endemic to
New Caledonia. There are two species, ''
Oncotheca balansae'' and ''
Oncotheca humboldtiana''.
''Oncotheca'' is the sole genus of the Oncothecaceae, which is one of three families of flowering plants
endemic
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...
to
New Caledonia. Its placement has been enigmatic for a long time, but a recent phylogenetic analysis
[Stull, G. W., R. Duno de Stefano, D. E. Soltis, and P. S. Soltis. (2015). Resolving Basal Lamiid Phylogeny and the Circumscription of Icacinaceae with a Plastome-Scale Data Set.” American Journal of Botany 102 (11): 1794–1813. doi:10.3732/ajb.1500298.] based on 73 plastid genes found it to be sister to
Icacinaceae
The Icacinaceae, also called the white pear family, are a family of flowering plants,"Icacinaceae" At: Angiosperm Phylogeny Website At: Missouri Botanical Garden Website (see ''External links'' below).
consisting of trees, shrubs, and lianas, pri ...
. It is now placed in the order
Icacinales.
References
Asterids
Trees of New Caledonia
Endemic flora of New Caledonia
Asterid genera
Taxa named by Henri Ernest Baillon
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