[Just mythoughts]

The Greek word for this plant is zizania, or known as zewan.

http://www.makli.us/bearded-darnel-0040902/

http://www.botanical.com/botanical/mgmh/g/grasse34.html#dar

I am finding conflicting claims that the greek zizania, or zewan, is not the same as the bearded darnel. Maybe there is ‘grant’ money available to research this plant???? (Just kidding.)

[muawiyah]

The problem is the plant has been studied for only two reasons ~ (1) it's use as medicine in ancient times, and (2) it's occurrence as a pest.

So, it has great value and yet should be burned out before it kills you.