Alstonia

Alstonia scholaris

Alstonia scholaris is a glabrous tree and grows up to 40 m (130 ft) tall. Its mature bark is grayish and its young branches are copiously marked with lenticels. A unique feature of this tree is that in some places, such as New Guinea, the trunk is three-sided (i.e. it is triangular in cross-section). he wood of Alstonia scholaris has been recommended for the manufacture of pencils, as it is suitable in nature and the tree grows rapidly and is easy to cultivate.

Other Details

• Family :
  Apocynaceae
• Common Name :
  Blackboard tree, scholar tree, milkwood or devil's tree
• Origin :
  Southern China, Tropical Asia (mainly the Indian subcontinent and Southeast Asia）and Australasia