Billion-year revision of plant evolution timeline may stem from discovery of lignin in seaweed

Land plants' ability to sprout upward through the air, unsupported except by their own woody tissues, has long been considered one of the characteristics separating them from aquatic plants, which rely on water to support them.

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<p><a href="http://www.physorg.com/news152273392.html">Billion-year revision of plant evolution timeline may stem from discovery of lignin in seaweed</a></p> <p>Land plants' ability to sprout upward through the air, unsupported except by their own woody tissues, has long been considered one of the characteristics separating them from aquatic plants, which rely on water to support them.</p>