This is a rare and surprisingly hardy species from Brazil which does great outside for us.  Pink corolla tube with green petals and yellow throat.  Not aggressive.

Unflowered plants from our seed collection, although attributes and geography suggest a likelihood of this being the species edulis due to widespread cultivation from pre-Columbian times thanks to the edible tubers.  If this is edulis, expect 24 or more pink-tubed flowers with green-yellow throats in a fireworks umbel.  Showy orange seeds in fall.