Not always. Some years back I spent some time assisting an author of a mystery novel in identifying a poisonous conservatory plant that would kill off the victim within a given period of time. We went through a number of plants until we found one that fit her plot. Don't recall what the final selection was but I do recall being very impressed with her dedication to accuracy. Boyce Tankersley Director of Living Plant Documentation Chicago Botanic Garden 1000 Lake Cook Road Glencoe, IL 60022 tel: 847-835-6841 fax: 847-835-1635 email: btankers@chicagobotanic.org