Annesijoa is a monotypic genus of plants in the family Euphorbiaceae.
[2] The sole species, Annesijoa novoguineensis is endemic to New Guinea.
Annesijoa is a taxonomic anagram derived from the name of the confamilial genus Joannesia.
The latter name is a taxonomic patronym honoring the king John VI of Portugal.
[3] This Euphorbiaceae-related article is a stub.