California Health and Safety Code Section 11357
Under the Health and Safety Code 11359, this section makes it illegal to possess marijuana, if you do not have a recommendation card or permission to possess marijuana for medicinal purposes. Unless authorized by law, possession of concentrated cannabis is illegal and may be punished by jail or even prison.
Someone who is cited for possession of marijuana (less than 28.5 grams), may be convicted of an infraction. Even though this used to be a misdemeanor, it is now only an infraction. However, someone who possesses more than 28.5 grams faces a misdemeanor.