pennyroill
A fragrant herb, the leaves of which are used for medicinal purposes; the fibers from the stems are processed to make special red-paper "50¢" sleeves for bundling copper coins.
I'm not much into herbal medicine, but I do always get a kick out of how the coin-sleeves made from pennyroill fibre stay folded and secure after I fill them with coins and tuck the ends in.