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Euphorbia subg. Poinsettia

Subgenus of flowering plants

Summary

Subgenus of flowering plants

Euphorbia sect. Poinsettia (Graham) Baill.

Euphorbia subg. Poinsettia is a subgenus deriving from the genus Euphorbia, and is endemic to North America. It contains around 24 species, most famously E. pulcherrima, the poinsettia which grows wild in the mountains on the Pacific slope of Mexico. Despite many legends, no one knows from which wild population the cultivated varieties derive.

This taxon was first published at genus rank under the name Poinsettia by Robert Graham in 1836. It was demoted to a section of Euphorbia as E. sect. Poinsettia by Henri Ernest Baillon in 1858, but promoted to subgenus rank by Homer Doliver House in 1924. A 2007 study confirmed its monophyly.

Its many species include:

  • E. pulcherrima – (poinsettia)
  • E. cyathophora – (summer poinsettia, wild poinsettia, painted leaf poinsettia)
  • E. dentata – (green poinsettia)
  • E. heterophylla – (desert poinsettia, wild poinsettia)
  • E. pinetorum – (Everglades poinsettia)

The common name "wild poinsettia" is sometimes applied to two of these species.

References

fr:Poinsettia

References

  1. "The wild Poinsettia Page".
  2. R. Graham. Description of several new or rare plants... Edinburgh New Philosophical Journal 20(2): 412–413. 1836
  3. Hibbert & Buist. 1839 edition. American Flower Garden Directory. p. 191
  4. (2007). "A phylogeny of Euphorbieae subtribe Euphorbiinae". Journal of Plant Biology.
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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