Grevillea robusta tree log with gum remaining after cutting down the rest of the tree

Grevillea robusta is a flowering plant of the Proteaceae family, also known as the southern silky oak, silk oak, silky oak, silver oak, or Australian silver oak.  

 It is a tree and the largest species in its genus, Quercus, the genuine oaks that grows naturally in riverine, subtropical, and dry rainforest settings in eastern coastal Australia. 

The pictured is a log that remains every time a tree us cut down. This is for the mentioned species above.