@egreg: an amusing fact: we were rehearsing some songs on Saturday and there's was a latin verse. Then I remember this plant:
en.wikipedia.org/wiki/Pereskia_aculeata In the region of Minas Gerais, it's widely known as
ora pro nobis; the story behind the name is a legend: every time people harvested the plant in the backyard of a priest's house, he used to pray a litany. :)