Linked from
The 27 pages that link to Vascular cambium, each with the reason it gives.
Vascular plantBroader topic: Its activity thickens stems and roots in woody vascular plants.
Secondary growthBroader topic: Its divisions drive most secondary thickening in stems and roots.
MeristemBroader topic: Its divisions thicken stems and roots after primary growth.
Plant stemBroader topic: Its activity thickens woody stems by adding vascular tissue.
Woody plantBroader topic: Its activity adds the wood and inner bark that enlarge many woody stems.