1. Holarctic Kingdom: This kingdom encompasses the northern temperate regions, including North America, Europe, and Asia.
2. Paleotropical Kingdom: This kingdom covers tropical Africa, Madagascar, the Indian subcontinent, Southeast Asia, and Australia.
3. Neotropical Kingdom: This kingdom covers the tropical and subtropical regions of the Americas, from southern Mexico to southern South America.
4. Capensis Kingdom: This kingdom encompasses the Cape Floral Region of South Africa, known for its high levels of endemism (unique species found nowhere else).
5. Australian Kingdom: This kingdom encompasses the continent of Australia, including Tasmania and nearby islands.
6. Antarctic Kingdom: This kingdom encompasses the southernmost regions of South America, including Tierra del Fuego, the Falkland Islands, and the subantarctic islands.
It's important to note that the boundaries between these kingdoms can be somewhat blurry and are not always universally agreed upon. Some botanists might also recognize other kingdoms or sub-kingdoms depending on their specific criteria and perspective.