sentences:  Dioscorea esculenta
  
  Dioscorea esculenta, commonly known as the lesser yam, is a yam species native to Island Southeast Asia and introduced to Near Oceania and East Africa by early Austronesian voyagers.It is grown for their edible tubers, though it has smaller tubers than the more widely-cultivated "Dioscorea alata" and is usually spiny.