They speculate that Pertica may have evolved into plants with even denser forks, which eventually evolved into leaves. Other branches ended in dense clusters of spore cases. Even today, some plants that are considered primitive reproduce with spores . But most plants are propagated by seeds. That is the color of chlorophyll, the magical pigment that helps plants capture the sun s energy.
All scientists can say is that Maine s state fossil was probably green.
Scientists think Pertica grew in marshes. Remember, the first plants were like people attempting to colonize the moon. They were limited by their need for water. Millions of years passed before plants adapted that could obtain water from deep underground or absorb it through their leaves. I t s hard to find fossils in Maine because there are so few sedimentary rocks.