Small aerial tubers produced in the axils of the leaves are called tubercles.
Cinnamon vine
(Dioscorea batatas)
String-of-hearts
(Ceropegia woodii)
Devil's tongue
Amorphophallus bulbifera
Tubercles are usually induced by short days and appear on the plants in late summer.
They are easily removed from the plant and can be dried and stored overwinter for spring planting.
Clonal plants from hardy begonia come back each year from aerial tubers that drop to the ground in the fall.
Hardy begonia (Begonia evansiana)
