Thalamiflorae is a historical grouping of dicotyledons, arranged in the De Candolle system and in the Bentham and Hooker system. This group was named and published well before internationally accepted rules for botanical nomenclature. In these systems, a family was indicated as "ordo", and modern rules of botanical nomenclature accept that as meaning a family rather than an order.[1][Article 18.2] Family names have also since been standardized (most family names now end in -aceae).
Polypetalae. Dome shaped plants with unexpanded flower receptacle (thalamus), polysepalous, hypogenous with a superior ovary
Within the dicotyledons ("classis prima Dicotyledoneae") the systems recognize this as subclass 1. Thalamiflorae. The full Ordo, Tribe and genera are shown below
Ordo 1. Ranunculaceae
Ordo 2. Dilleniaceae
Ordo 3. Magnoliaceae
Ordo 4. Annonaceae
Ordo 5. Menispermaceae
Ordo 6. Berberideae
Ordo 7. Podophyllaceae
Ordo 8. Nymphaeaceae
Ordo 9. Papaveraceae
Ordo 10. Fumariaceae
Ordo 11. Cruciferae
Ordo 12. Capparideae
Ordo 13. Flacourtianeae
Ordo 14. Bixineae
Ordo 15. Cistineae
Ordo 16. Violarieae
Ordo 17. Droseraceae
Ordo 18. Polygaleae
Ordo 19. Tremandreae
Ordo 20. Pittosporeae
Ordo 21. Frankeniaceae
Ordo 22. Caryophylleae
Ordo 23. Lineae
Ordo 24. Malvaceae
Ordo 25. Bombaceae
Ordo 26. Byttneriaceae
Ordo 27. Tiliaceae
Ordo 28. Elaeocarpeae
Ordo 29. Chlenaceae
Ordo 30. Ternstroemiaceae
Ordo 31. Camellieae
Ordo 32. Olacineae
Ordo 33. Aurantiaceae
Ordo 34. Hypericineae
Ordo 35. Guttiferae
Ordo 36. Marcgraviaceae
Ordo 37. Hippocrateaceae
Ordo 38. Erythroxyleae
Ordo 39. Malpighiaceae
Ordo 40. Acerineae
Ordo 41. Hippocastaneae
Ordo 42. Rhizoboleae
Ordo 43. Sapindaceae
Ordo 44. Meliaceae
Ordo 45. Ampelideae
Ordo 46. Geraniaceae
Ordo 47. Tropaeoleae
Ordo 48. Balsamineae
Ordo 49. Oxalideae
Ordo 50. Zygophylleae
Ordo 51. Rutaceae
Ordo 52. Simarubeae
Ordo 53. Ochnaceae
Ordo 54. Coriarieae
Thalamiflorae is a historical grouping of dicotyledons, arranged in the De Candolle system and in the Bentham and Hooker system. This group was named and published well before internationally accepted rules for botanical nomenclature. In these systems, a family was indicated as "ordo", and modern rules of botanical nomenclature accept that as meaning a family rather than an order.[Article 18.2] Family names have also since been standardized (most family names now end in -aceae).