Species Differentiation
- Development of rooted plants
- Flowering plants vs. Conifers
- Ferns and other primitive plants
- Borderline species such as coliform protists
Read more about this topic: Timeline Of Plant Evolution
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“Any reading not of a vicious species must be a good substitute for the amusements too apt to fill up the leisure of the labouring classes.”
—James Madison (1751–1836)