Lily of the Incas

Alstroemeria, commonly called the Peruvian Lily or Lily of the Incas, is a South American genus of about 50 species of flowering plants.
Alstroemerias are tall, with round clusters of butterfly-shaped flowers atop dark green stems.
The plants are distinctive vegetative, with a rootstock consisting of a slender rhizome or group of rhizomes (the “crown”).

Above-ground shoots may be very short in some alpine Andean species (a few cm tall) or up to about 1.5 m tall in other species. Each year (more often in some hybrids) up to 80 new shoots are produced from the rootstock and each terminates in an umbel of a few up to 10 or so flowers.
Perhaps the most fascinating trait of Alstroemeria and its relatives is the fact that the leaves are resupinate, that is, they twist from the base so that what appears to be the upper leaf surface is in fact the lower leaf surface. This very unusual botanical feature is easily observed in the leaves on cut flowers from the florist.