Kauri is a large tree up to 30m and rarely to 60m. tall. The bole of the trunk may be commonly up to 3m. in diameter and occasionally to 7m. There are many records of trees yielding logs 7m in diameter and 24m. long. The bole is always straight, often branch-free, columnar, with little or no taper.
Reptile clings to tree. Griselinia lucida. puka. Horizontal girdling roots cling to the trunk of the host tree Beilschmiedia tawa. Puka begins life as an epiphyte in the canopy of the forest. In time it sends roots down into the ground.