refers to the plant life occurring in a particular region. Plants are
grouped into floras based on region, period, special environment, or
climate. Regions can be geographically distinct
like mountain vs. flatland, desert vs. wetland. Plants are one of
Earth's greatest resources. They are sources of food, medicines and
materials with vast economic and cultural importance. They stabilize
ecosystems and form the habitats that sustain the planet's animal life.
There are estimated 400,000 species of vascular plants on Earth, with
some 10% more yet to be discovered.