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Wikipedia / Olacaceae

Olacaceae is a family of flowering plants in the order Santalales. They are woody plants, native throughout the tropical regions of the world. , the circumscription of the family varies; some sources maintain a broad family, others split it into seven segregate families.

Taxonomy

The 1998 APG system and the 2003 APG II system assign it to the order Santalales in the clade core eudicots. Prior to the advent of molecular data, the circumscription of the family Olacaceae varied widely between different authorities. Among these various classifications, about 30 genera were included in the family. 15 genera are recognized for Olacaceae by the Germplasm Resources Information Network. The phylogenetic investigation published in 2008 recovered seven clades that were well-supported by molecular and morphological characters, but no formal taxonomic reorganization of the family was proposed. For this reason, Olacaceae in the broad sense was adopted by the APG III-system. The formal reconfiguration of this family (as well as the rest of the order Santalales) was published by Nickrent and co-workers in 2010 and this concept is shown below. Olacaceae in the broad sense was split into seven families, and the genus Schoepfia was placed with Arjona and Quinchamalium (both previously Santalaceae) in the family Schoepfiaceae.

Genera

  1. Olacaceae sensu stricto

  2. Dulacia - 13 species of South America

  3. Olax - ca 40 species of the Old World tropics

  4. Ptychopetalum - 2 species of tropical South America and 2 species of western and central Africa

  5. Aptandraceae

  6. Anacolosa - 16 species of the Old World tropics

  7. Aptandra - 3 species in tropical America and 1 species in Africa

  8. Cathedra - 5 species of South America

  9. Chaunochiton - 3 species of tropical America

  10. Harmandia - one species in southeastern Asia

  11. Hondurodendron - one species in Honduras

  12. Ongokea - one species in Africa

  13. Phanerodiscus - 3 species of Madagascar

  14. Ximeniaceae

  15. Curupira - one species in Amazonian Brazil

  16. Douradoa - one species in Brazil

  17. Malania - one species in China

  18. Ximenia - 10 species of the Old and New World tropics

  19. Coulaceae

  20. Coula - one species in tropical western Africa

  21. Minquartia - one species in tropical America

  22. Ochanostachys - one species in western Malaysia

  23. Strombosiaceae

  24. Diogoa - 2 species of tropical Africa

  25. Engomegoma - one species of tropical Africa

  26. Scorodocarpus - one species in tropical Asia

  27. Strombosia - 3 species of tropical Asia and 6 species of tropical Africa

  28. Strombosiopsis - 3 species of tropical Africa

  29. Tetrastylidium - 2 species of South America

  30. Erythropalaceae

  31. Erythropalum - one species of Indomalaysia

  32. Heisteria - ca 33 species of tropical America and 3 species in Africa

  33. Maburea - one species in Guyana

  34. Octoknemaceae

  35. Octoknema - 14 species of tropical Africa

  36. Unplaced genus

  37. Brachynema - morphological cladistic analysis places this genus in Ericales, and no genetic study has yet been published

References