Joannesia

Joannesia is a genus of plants in the family Euphorbiaceae, first described as a genus in 1798.[2][3] The entire genus is endemic to Brazil.[1][4]

Joannesia
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Euphorbiaceae
Subfamily: Crotonoideae
Tribe: Jatropheae
Genus: Joannesia
Vell. 1798 not Pers. 1807 (Asteraceae)
Synonyms[1]
  • Anda A.Juss.
  • Andicus Vell.
  • Andiscus Vell.

Etymology

Joannesia is a taxonomic patronym honoring the king John VI of Portugal.[5]

The name Joannesia yielded a taxonomic anagram for the confamilial genus Annesijoa.[5]

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

In 1807, Persoon used the same name, Joannesia, to a very different plant.[6] 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:[7]

References
  1. Kew World Checklist of Selected Plant Families
  2. Vellozo, José Mariano da Conceição. 1798. Alographia dos alkalis fixos: vegetal ou potassa, mineral ou soda e dos sus nitratos: segundo as melhores memorias estrangeiras, que se tem escripto a este asumpto 199.
  3. Tropicos, Joannesia Vell.
  4. Forzza, R. C. 2010. Lista de espécies Flora do Brasil "Archived copy". Archived from the original on 2015-09-06. Retrieved 2015-08-20.CS1 maint: archived copy as title (link). Jardim Botânico do Rio de Janeiro, Rio de Janeiro
  5. Burkhardt, Lotte (2018-06-06). Verzeichnis eponymischer Pflanzennamen - Erweiterte Edition. Index of Eponymic Plant Names - Extended Edition. Index de Noms éponymiques des Plantes - Édition augmentée (in German). Botanic Garden and Botanical Museum Berlin, Freie Universität Berlin. p. A13. doi:10.3372/epolist2018. ISBN 978-3-946292-26-5.
  6. Persoon, Christiaan Hendrik. 1807. Synopsis Plantarum 2: 383 in Latin
  7. Tropicos, Joannesia Pers.
  8. The Plant List, synonym list for Chuquiraga jussieui J.F.Gmel.


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