Floristic Kingdoms
Botanist Ronald Good identified six floristic kingdoms (Boreal or Holarctic, Neotropical, Paleotropical, South African, Australian, and Antarctic), the largest natural units he determined for flowering plants. Good's six kingdoms are subdivided into smaller units, called provinces. The Paleotropical kingdom is divided into three subkingdoms, which are each subdivided into floristic provinces. Each of the other five kingdoms are subdivided directly into provinces. There is a total of 37 floristic provinces. Almost all provinces are further subdivided into floristic regions.
Read more about this topic: Floristic Provinces
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“There was never a man born so wise or good, but one or more companions came into the world with him, who delight in his faculty, and report it. I cannot see without awe, that no man thinks alone and no man acts alone, but the divine assessors who came up with him into life,—now under one disguise, now under another,—like a police in citizen’s clothes, walk with him, step for step, through all kingdoms of time.”
—Ralph Waldo Emerson (1803–1882)