Some kind of aroid, I presume. Two varieties identified by Lacandon Mayas, living in the rain forest of Chiapas: chiah k'aax 'forest chiah' and another one the people cultivate, bushy and the leaves are variegated, called chiah. Sending both. Apparently they get small, fragrant white "flowers" that smell like vanilla. They sprinkle the pollen into drinks. The flowers have "skin" (spathe?). No pics of inflorescences, sorry: these photos taken in October.