Plants/Leaves with more lignin and other biochemicals
I am trying to identify plants and mainly leaves that contain more lignin(and other biochemicals) than other leaves. For instance I know that Tomato skin has a high content of Lignin.
And pine needles have a high content of Lignin too.
Some one has more examples to identify this biochemicals?
I also need plants/leaves/fruits with high content of the following biochemicals:
Thank you very much for the tips