Lignotuber

[1] Other woody plants may develop basal burls as a similar survival strategy, often as a response to coppicing or other environmental stressors.

The largest known lignotubers (also called "root collar burls") are those of the Coast Redwood (Sequoia sempervirens) of central and northern California and extreme southwestern Oregon.

A lignotuber washed into Big Lagoon, California, by the full gale storm of 1977 was 41 ft (12 m) in diameter and about half as tall and estimated to weigh 525 short tons (476 t).

[5] The largest dicot lignotubers are those of the Chinese Camphor Tree, or Kusu (Cinnamomum camphora) of Japan, China and the Koreas.

Ones at the Vergelegen Estate in Cape Town, South Africa, which were planted in the late 1600s have muffin-shaped lignotubers up to six feet (2 m) high and about 30 ft (9 m) in diameter.