Puneet Varma (Editor)

Joannesia

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Kingdom
  
Plantae

Family
  
Euphorbiaceae

Tribe
  
Jatropheae

Order
  
Malpighiales

Subfamily
  
Crotonoideae

Rank
  
Genus

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Joannesia princeps, Vaupesia

Joannesia is a genus of plants in the family Euphorbiaceae, first described as a genus in 1798. The entire genus is endemic to Brazil.

Species
  1. Joannesia heveoides Ducke - Amazonas State in Brazil
  2. Joannesia princeps Vell. - eastern Brazil (Distrito Federal, EspĂ­rito Santo, Minas Gerais, Rio de Janeiro)
species in homonymic genus

In 1807, Persoon used the same name, Joannesia, to a very different plant. He thus created an illegitimate homonym, contrary to the rules of nomenclature. So the one species name that he had created in this illegitimate genus had to be renamed, as follows:

  • Joannesia insignis Pers. - Chuquiraga jussieui J.F.Gmel.
  • Boleira joannesia princeps


    References

    Joannesia Wikipedia