Australia
Although only a dozen plant families are unique to , there are 530 unique genera and many unique species within these genera. As the n fragment of prehistoric Gondwanaland drifted north, its ancient flora became the basis for the present plant systems. Increasing aridity modified this vegetation, giving much of it hardened, pointed leaves of reduced size--a condition called scleromorphy.
's native vegetation is divisible into seven types. The first type of vegetation consists of remnants of Gondwanan rain forests, with primitive flowering plants, palms, and laurels. Thes ....
Word count: 4707 - Page count: 18
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