Phytolacca Dioica - Caudex Forming Tree
This very unusual plant has a common name of the Ombu (or Umbu) Tree or Elephant Tree and can grow to a height and spread of 20m! Its branches develop from its caudiciform trunk which itself can be massive in mature specimens - up to 30m in circumference!
It is native to Argentina grasslands and its water storing trunk is fire resistant to protect itself from the grass fires that occur naturally, and also to store water supply for the dry season.
Although this tree will become quite large! It would make an ideal candidate for a Bonsai, or if kept in small pots, its growth will be stunted!