Joannesia

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids I
Ordo: Malpighiales

Familia: Euphorbiaceae
Subfamilia: Crotonoideae
Tribus: Jatropheae
Genus: Joannesia
Species: J. heveoides – J. princeps
Name

Joannesia Vell., Alogr. Alkalis: 199 (1798).

Type species: Joannesia princeps Vell.

Synonyms

Heterotypic
Anda A.Juss. in G.-F.Cuvier, Dict. Sci. Nat. 2: 113 (1804).
Andicus Vell., Fl. Flumin.: 80 (1829).
Andiscus Vell., Fl. Flumin. 2: t. 86 (1829).

References
Primary references

Vellozo, J.M.C., 1798. Alographia dos alkalis fixos: 199.

Links

Govaerts, R. et al. 2020. Joannesia in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2020 Jun 16. Reference page.
International Plant Names Index. 2020. Joannesia. Published online. Accessed: Jun 16 2020.
Tropicos.org 2020. Joannesia. Missouri Botanical Garden. Published online. Accessed: 16 Jun 2020.

Vernacular names

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]
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]

Joannesia heveoides Ducke - Amazonas State in Brazil
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]

Joannesia insignis Pers. - Chuquiraga jussieui J.F.Gmel.[8]

References

Kew World Checklist of Selected Plant Families
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.
Tropicos, Joannesia Vell.
Forzza, R. C. 2010. Lista de espécies Flora do Brasil "Archived copy". Archived from the original on 2015-09-06. Retrieved 2015-08-20.. Jardim Botânico do Rio de Janeiro, Rio de Janeiro
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.
Persoon, Christiaan Hendrik. 1807. Synopsis Plantarum 2: 383 in Latin
Tropicos, Joannesia Pers.
The Plant List, synonym list for Chuquiraga jussieui J.F.Gmel.