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Boreal Kingdom
The
Boreal Kingdom
or
Holarctic Kingdom
(
Holarctis
) is a
floristic kingdom
identified by botanist
Ronald Good
(and later by
Armen Takhtajan
), which includes the
temperate
to
Arctic
portions of
North America
and
Eurasia
. Its
flora
is inherited from the ancient
supercontinent
of
Laurasia
. However, much of the floristic kingdom (and most of its
Circumboreal Region
) was glaciated during the
Pleistocene
and has a very young flora.
Cenozoic
relicts
found refuge in the southern and mountainous parts of the kingdom, especially in the
Eastern Asiatic Region
and
North American Atlantic Region
.
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