California Code, Fish and Game Code - FGC § 1907

(a) The commission may adopt regulations governing the taking, possession, propagation, transportation, exportation, importation, or sale of any endangered or rare native plants.  Such regulations may include, but shall not be limited to, requirements for persons who perform any of the foregoing activities to maintain written records and to obtain permits which may be issued by the department.

(b) Persons engaged in the production, storage, sale, delivery, or transportation of nursery stock pursuant to the provisions of Part 3 (commencing with Section 6701) of Division 4 of the Food and Agricultural Code shall not be required to obtain a permit pursuant to this chapter unless such activities involve the collection of rare or endangered plants or parts or products thereof growing in a wild, uncultivated state.

(c) Persons who purchase nursery grown stock shall not be required to obtain a permit pursuant to this chapter.