Simplify the following text for a Grade 14 native English-speaking person.
Original: The vascular cambium is a type of meristem - tissue consisting of embryonic ( incompletely differentiated ) cells from which other ( more differentiated ) plant tissues originate .
Simplified: Vascular cambium is a type of meristem - a tissue consisting of embryonic ( not specialized ) cells which can produce other ( and more differentiated ) plant tissues originate .