Up on the hill behind my grandparents Missouri house, there was a spring. Way back when, a homesteader had walled it in with rock and mortar. An iron pipe from the spring pool filled a small hand dug pond. I presume the spring pool was their drinking water. The pool and the little outflow creek was filled with watercress. Having grown up in the Smokies of eastern Tennessee, and losing his dad in the big coal mine disaster of 1906, he and his brothers did a lot of foraging for the table. Spicy, peppery watercress was a staple and a favorite.
He pronounced it “watercrease”.
Edit: Check this out about how nutritious watercress is!
I think I'm going to have to find a source closer than Panama.
https://www.organicfacts.net/health-benefits/vegetable/watercress.html