This lovely sounding medicinal plant is a massive mint (from the mint family, but definitely not of the chocolate mint variety!) is known by many herbalists as one of the best for “gladdening and strengthening the heart”. It’s quite a gnarly fellow, so don’t go pushing it around or you will get a few prickles in return!
To learn more about its medicinal uses (and for pictures), see:
https://www.thetisislandnatureconservancy.org/single-post/plant-of-the-week
