Sorry to tell you if this is the plant I'm thinking of it has survived the stone age era. I was told that also a handful of this stuff is great for cleaning pans but not the enamel pans.
You know if it is the same plant you could be onto a gold mine ! Why not put handfulls in linen bags and sell it as an organic pan scrubber?!
Next time I get a burnt pan I will try it out !